chore: updated env example

Reviewed-on: #208
Reviewed-by: moritz <moritz@noreply.git.local-it.org>

CHANGELOG.md

@@ -0,0 +1,19 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+- User-Member linking with fuzzy search autocomplete (#168)
+- PostgreSQL trigram-based member search with typo tolerance
+- WCAG 2.1 AA compliant autocomplete dropdown with ARIA support
+- Bilingual UI (German/English) for member linking workflow
+
+### Fixed
+- Email validation false positive when linking user and member with identical emails (#168 Problem #4)
+- Relationship data extraction from Ash manage_relationship during validation
+

assets/js/app.js

@@ -23,9 +23,42 @@ import {LiveSocket} from "phoenix_live_view"
 import topbar from "../vendor/topbar"
 
 let csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content")
+
+// Hooks for LiveView components
+let Hooks = {}
+
+// ComboBox hook: Prevents form submission when Enter is pressed in dropdown
+Hooks.ComboBox = {
+  mounted() {
+    this.handleKeyDown = (e) => {
+      const isDropdownOpen = this.el.getAttribute("aria-expanded") === "true"
+      
+      if (e.key === "Enter" && isDropdownOpen) {
+        e.preventDefault()
+      }
+    }
+    
+    this.el.addEventListener("keydown", this.handleKeyDown)
+  },
+  
+  destroyed() {
+    this.el.removeEventListener("keydown", this.handleKeyDown)
+  }
+}
+
 let liveSocket = new LiveSocket("/live", Socket, {
   longPollFallbackMs: 2500,
-  params: {_csrf_token: csrfToken}
+  params: {_csrf_token: csrfToken},
+  hooks: Hooks
+})
+
+// Listen for custom events from LiveView
+window.addEventListener("phx:set-input-value", (e) => {
+  const {id, value} = e.detail
+  const input = document.getElementById(id)
+  if (input) {
+    input.value = value
+  }
 })
 
 // Show progress bar on live navigation and form submits

docs/development-progress-log.md

@@ -329,6 +329,11 @@ end
 
 ---
 
+**PR #208:** *Show custom fields per default in member overview* 🔧
+- added show_in_overview as attribute to custom fields
+- show custom fields in member overview per default
+- can be set to false in the settings for the specific custom field
+
 ## Implementation Decisions
 
 ### Architecture Patterns
@@ -390,6 +395,7 @@ defmodule Mv.Membership.CustomField do
   attribute :value_type, :atom       # :string, :integer, :boolean, :date, :email
   attribute :immutable, :boolean     # Can't change after creation
   attribute :required, :boolean      # All members must have this
+  attribute :show_in_overview, :boolean # "If true, this custom field will be displayed in the member overview table"
 end
 
 # CustomFieldValue stores values
@@ -1321,6 +1327,210 @@ end
 
 ---
 
+## Session: User-Member Linking UI Enhancement (2025-01-13)
+
+### Feature Summary
+Implemented user-member linking functionality in User Edit/Create views with fuzzy search autocomplete, email conflict handling, and accessibility support.
+
+**Key Features:**
+- Autocomplete dropdown with PostgreSQL Trigram fuzzy search
+- Keyboard navigation (Arrow keys, Enter, Escape)
+- Link/unlink members to user accounts
+- Email synchronization between linked entities
+- WCAG 2.1 AA compliant (ARIA labels, keyboard accessibility)
+- Bilingual UI (English/German)
+
+### Technical Decisions
+
+**1. Search Priority Logic**
+Search query takes precedence over email filtering to provide better UX:
+- User types → fuzzy search across all unlinked members
+- Email matching only used for post-filtering when no search query present
+
+**2. JavaScript Hook for Input Value**
+Used minimal JavaScript (~6 lines) for reliable input field updates:
+```javascript
+// assets/js/app.js
+window.addEventListener("phx:set-input-value", (e) => {
+  document.getElementById(e.detail.id).value = e.detail.value
+})
+```
+**Rationale:** LiveView DOM patching has race conditions with rapid state changes in autocomplete components. Direct DOM manipulation via `push_event` is the idiomatic LiveView solution for this edge case.
+
+**3. Keyboard Navigation: Hybrid Approach**
+Implemented keyboard accessibility with **mostly Server-Side + minimal Client-Side**:
+
+```elixir
+# Server-Side: Navigation and Selection (~45 lines)
+def handle_event("member_dropdown_keydown", %{"key" => "ArrowDown"}, socket) do
+  # Focus management on server
+  new_index = min(current + 1, max_index)
+  {:noreply, assign(socket, focused_member_index: new_index)}
+end
+```
+
+```javascript
+// Client-Side: Only preventDefault for Enter in forms (~13 lines)
+Hooks.ComboBox = {
+  mounted() {
+    this.el.addEventListener("keydown", (e) => {
+      const isDropdownOpen = this.el.getAttribute("aria-expanded") === "true"
+      if (e.key === "Enter" && isDropdownOpen) {
+        e.preventDefault()  // Prevent form submission
+      }
+    })
+  }
+}
+```
+
+**Rationale:** 
+- Server-Side handles all navigation logic → simpler, testable, follows LiveView best practices
+- Client-Side only prevents browser default behavior (form submit on Enter)
+- Latency (~20-50ms) is imperceptible for keyboard events without DB queries
+- Follows CODE_GUIDELINES "Minimal JavaScript Philosophy"
+
+**Alternative Considered:** Full Client-Side with JavaScript Hook (~80 lines)
+- ❌ More complex code
+- ❌ State synchronization between client/server
+- ✅ Zero latency (but not noticeable in practice)
+- **Decision:** Server-Side approach is simpler and sufficient
+
+**4. Fuzzy Search Implementation**
+Combined PostgreSQL Full-Text Search + Trigram for optimal results:
+```sql
+-- FTS for exact word matching
+search_vector @@ websearch_to_tsquery('simple', 'greta')
+-- Trigram for typo tolerance
+word_similarity('gre', first_name) > 0.2
+-- Substring for email/IDs
+email ILIKE '%greta%'
+```
+
+### Key Learnings
+
+#### 1. Ash `manage_relationship` Internals
+**Critical Discovery:** During validation, relationship data lives in `changeset.relationships`, NOT `changeset.attributes`:
+
+```elixir
+# During validation (manage_relationship processing):
+changeset.relationships.member = [{[%{id: "uuid"}], opts}]
+changeset.attributes.member_id = nil  # Still nil!
+
+# After action completes:
+changeset.attributes.member_id = "uuid"  # Now set
+```
+
+**Solution:** Extract member_id from both sources:
+```elixir
+defp get_member_id_from_changeset(changeset) do
+  case Map.get(changeset.relationships, :member) do
+    [{[%{id: id}], _opts}] -> id           # New link
+    _ -> Ash.Changeset.get_attribute(changeset, :member_id)  # Existing
+  end
+end
+```
+
+**Impact:** Fixed email validation false positives when linking user+member with identical emails.
+
+#### 2. LiveView + JavaScript Integration Patterns
+
+**When to use JavaScript:**
+- ✅ Direct DOM manipulation (autocomplete, input values)
+- ✅ Browser APIs (clipboard, geolocation)
+- ✅ Third-party libraries
+- ✅ Preventing browser default behaviors (form submit, scroll)
+
+**When NOT to use JavaScript:**
+- ❌ Form submissions
+- ❌ Simple show/hide logic
+- ❌ Server-side data fetching
+- ❌ Keyboard navigation logic (can be done server-side efficiently)
+
+**Pattern:**
+```elixir
+socket |> push_event("event-name", %{key: value})
+```
+```javascript
+window.addEventListener("phx:event-name", (e) => { /* handle */ })
+```
+
+**Keyboard Events Pattern:**
+For keyboard navigation in forms, use hybrid approach:
+- Server handles navigation logic via `phx-window-keydown`
+- Minimal hook only for `preventDefault()` to avoid form submit conflicts
+- Result: ~13 lines JS vs ~80 lines for full client-side solution
+
+#### 3. PostgreSQL Trigram Search
+Requires `pg_trgm` extension with GIN indexes:
+```sql
+CREATE INDEX members_first_name_trgm_idx 
+  ON members USING GIN(first_name gin_trgm_ops);
+```
+Supports:
+- Typo tolerance: "Gret" finds "Greta"
+- Partial matching: "Mit" finds "Mitglied"  
+- Substring: "exam" finds "example.com"
+
+#### 4. Server-Side Keyboard Navigation Performance
+**Challenge:** Concern that server-side keyboard events would feel laggy.
+
+**Reality Check:**
+- LiveView roundtrip: ~20-50ms on decent connection
+- Human perception threshold: ~100ms
+- Result: **Feels instant** in practice
+
+**Why it works:**
+```elixir
+# Event handler only updates index (no DB queries)
+def handle_event("member_dropdown_keydown", %{"key" => "ArrowDown"}, socket) do
+  new_index = min(socket.assigns.focused_member_index + 1, max_index)
+  {:noreply, assign(socket, focused_member_index: new_index)}
+end
+```
+- No database queries
+- No complex computations
+- Just state updates → extremely fast
+
+**When to use Client-Side instead:**
+- Complex animations (Canvas, WebGL)
+- Real-time gaming
+- Continuous interactions (drag & drop, drawing)
+
+**Lesson:** Don't prematurely optimize for latency. Server-side is simpler and often sufficient.
+
+#### 5. Test-Driven Development for Bug Fixes
+Effective workflow:
+1. Write test that reproduces bug (should fail)
+2. Implement minimal fix
+3. Verify test passes
+4. Refactor while green
+
+**Result:** 355 tests passing, 100% backend coverage for new features.
+
+### Files Changed
+
+**Backend:**
+- `lib/membership/member.ex` - `:available_for_linking` action with fuzzy search
+- `lib/mv/accounts/user/validations/email_not_used_by_other_member.ex` - Relationship change extraction
+- `lib/mv_web/live/user_live/form.ex` - Event handlers, state management
+
+**Frontend:**
+- `assets/js/app.js` - Input value hook (6 lines) + ComboBox hook (13 lines)
+- `lib/mv_web/live/user_live/form.ex` - Keyboard event handlers, focus management
+- `priv/gettext/**/*.po` - 10 new translation keys (DE/EN)
+
+**Tests (NEW):**
+- `test/membership/member_fuzzy_search_linking_test.exs`
+- `test/accounts/user_member_linking_email_test.exs`
+- `test/mv_web/user_live/form_member_linking_ui_test.exs`
+
+### Deployment Notes
+- **Assets:** Requires `cd assets && npm run build`
+- **Database:** No migrations (uses existing indexes)
+- **Config:** No changes required
+
+---
+
 ## Conclusion
 
 This project demonstrates a modern Phoenix application built with:
@@ -1343,14 +1553,14 @@ This project demonstrates a modern Phoenix application built with:
 **Next Steps:**
 - Implement roles & permissions
 - Add payment tracking
-- Improve accessibility (WCAG 2.1 AA)
+- ✅ ~~Improve accessibility (WCAG 2.1 AA)~~ - Keyboard navigation implemented
 - Member self-service portal
 - Email communication features
 
 ---
 
-**Document Version:** 1.1  
-**Last Updated:** 2025-11-13  
+**Document Version:** 1.2  
+**Last Updated:** 2025-11-27  
 **Maintainer:** Development Team  
 **Status:** Living Document (update as project evolves)
 

docs/feature-roadmap.md

@@ -94,15 +94,18 @@
 - ✅ CustomFieldValue type management
 - ✅ Dynamic custom field value assignment to members
 - ✅ Union type storage (JSONB)
+- ✅ Default field visibility configuration
+
+**Closed Issues:**
+- [#194](https://git.local-it.org/local-it/mitgliederverwaltung/issues/194) - Custom Fields: Harden implementation (S)
+- [#197](https://git.local-it.org/local-it/mitgliederverwaltung/issues/197) - Custom Fields: Add option to show custom fields in member overview (M)
 
 **Open Issues:**
-- [#194](https://git.local-it.org/local-it/mitgliederverwaltung/issues/194) - Custom Fields: Harden implementation (S) [0/3 tasks]
 - [#157](https://git.local-it.org/local-it/mitgliederverwaltung/issues/157) - Concept how custom fields are handled (M, High priority) [0/4 tasks]
 - [#161](https://git.local-it.org/local-it/mitgliederverwaltung/issues/161) - Don't show birthday field for default configurations (S, Low priority)
 - [#153](https://git.local-it.org/local-it/mitgliederverwaltung/issues/153) - Sorting functionalities for custom fields (M, Low priority)
 
 **Missing Features:**
-- ❌ Default field visibility configuration
 - ❌ Field groups/categories
 - ❌ Conditional fields (show field X if field Y = value)
 - ❌ Field validation rules (min/max, regex patterns)

lib/membership/custom_field.ex

@@ -14,6 +14,7 @@ defmodule Mv.Membership.CustomField do
   - `description` - Optional human-readable description
   - `immutable` - If true, custom field values cannot be changed after creation
   - `required` - If true, all members must have this custom field (future feature)
+  - `show_in_overview` - If true, this custom field will be displayed in the member overview table and can be sorted
 
   ## Supported Value Types
   - `:string` - Text data (max 10,000 characters)
@@ -59,10 +60,10 @@ defmodule Mv.Membership.CustomField do
 
   actions do
     defaults [:read, :update]
-    default_accept [:name, :value_type, :description, :immutable, :required]
+    default_accept [:name, :value_type, :description, :immutable, :required, :show_in_overview]
 
     create :create do
-      accept [:name, :value_type, :description, :immutable, :required]
+      accept [:name, :value_type, :description, :immutable, :required, :show_in_overview]
       change Mv.Membership.CustomField.Changes.GenerateSlug
       validate string_length(:slug, min: 1)
     end
@@ -119,6 +120,12 @@ defmodule Mv.Membership.CustomField do
     attribute :required, :boolean,
       default: false,
       allow_nil?: false
+
+    attribute :show_in_overview, :boolean,
+      default: true,
+      allow_nil?: false,
+      public?: true,
+      description: "If true, this custom field will be displayed in the member overview table"
   end
 
   relationships do

lib/membership/member.ex

@@ -38,6 +38,10 @@ defmodule Mv.Membership.Member do
   require Ash.Query
   import Ash.Expr
 
+  # Module constants
+  @member_search_limit 10
+  @default_similarity_threshold 0.2
+
   postgres do
     table "members"
     repo Mv.Repo
@@ -152,8 +156,10 @@ defmodule Mv.Membership.Member do
       prepare fn query, _ctx ->
         q = Ash.Query.get_argument(query, :query) || ""
 
-        # 0.2 as similarity threshold (recommended) - lower value can lead to more results but also to more unspecific results
-        threshold = Ash.Query.get_argument(query, :similarity_threshold) || 0.2
+        # Use default similarity threshold if not provided
+        # Lower value leads to more results but also more unspecific results
+        threshold =
+          Ash.Query.get_argument(query, :similarity_threshold) || @default_similarity_threshold
 
         if is_binary(q) and String.trim(q) != "" do
           q2 = String.trim(q)
@@ -187,8 +193,75 @@ defmodule Mv.Membership.Member do
         end
       end
     end
+
+    # Action to find members available for linking to a user account
+    # Returns only unlinked members (user_id == nil), limited to 10 results
+    #
+    # Filtering behavior:
+    # - If search_query provided: fuzzy search on names and email
+    # - If no search_query: return all unlinked members (up to limit)
+    # - user_email should be handled by caller with filter_by_email_match/2
+    read :available_for_linking do
+      argument :user_email, :string, allow_nil?: true
+      argument :search_query, :string, allow_nil?: true
+
+      prepare fn query, _ctx ->
+        user_email = Ash.Query.get_argument(query, :user_email)
+        search_query = Ash.Query.get_argument(query, :search_query)
+
+        query
+        |> Ash.Query.filter(is_nil(user))
+        |> apply_linking_filters(user_email, search_query)
+        |> Ash.Query.limit(@member_search_limit)
+      end
+    end
   end
 
+  @doc """
+  Filters members list based on email match priority.
+
+  Priority logic:
+  1. If email matches a member: return ONLY that member (highest priority)
+  2. If email doesn't match: return all members (for display in dropdown)
+
+  This is used with :available_for_linking action to implement email-priority behavior:
+  - user_email matches → Only this member
+  - user_email does NOT match + NO search_query → All unlinked members
+  - user_email does NOT match + search_query provided → search_query filtered members
+
+  ## Parameters
+    - `members` - List of Member structs (from :available_for_linking action)
+    - `user_email` - Email string to match against member emails
+
+  ## Returns
+    - List of Member structs (either single email match or all members)
+
+  ## Examples
+
+      iex> members = [%Member{email: "test@example.com"}, %Member{email: "other@example.com"}]
+      iex> filter_by_email_match(members, "test@example.com")
+      [%Member{email: "test@example.com"}]
+
+      iex> filter_by_email_match(members, "nomatch@example.com")
+      [%Member{email: "test@example.com"}, %Member{email: "other@example.com"}]
+  """
+  @spec filter_by_email_match([t()], String.t()) :: [t()]
+  def filter_by_email_match(members, user_email)
+      when is_list(members) and is_binary(user_email) do
+    email_match = Enum.find(members, &(&1.email == user_email))
+
+    if email_match do
+      # Email match found - return only this member (highest priority)
+      [email_match]
+    else
+      # No email match - return all members unchanged
+      members
+    end
+  end
+
+  @spec filter_by_email_match(any(), any()) :: any()
+  def filter_by_email_match(members, _user_email), do: members
+
   validations do
     # Required fields are covered by allow_nil? false
 
@@ -361,7 +434,32 @@ defmodule Mv.Membership.Member do
     identity :unique_email, [:email]
   end
 
-  # Fuzzy Search function that can be called by live view and calls search action
+  @doc """
+  Performs fuzzy search on members using PostgreSQL trigram similarity.
+
+  Wraps the `:search` action with convenient opts-based argument passing.
+  Searches across first_name, last_name, email, and other text fields using
+  full-text search combined with trigram similarity.
+
+  ## Parameters
+    - `query` - Ash.Query.t() to apply search to
+    - `opts` - Keyword list or map with search options:
+      - `:query` or `"query"` - Search string
+      - `:fields` or `"fields"` - Optional field restrictions
+
+  ## Returns
+    - Modified Ash.Query.t() with search filters applied
+
+  ## Examples
+
+      iex> Member |> fuzzy_search(%{query: "Greta"}) |> Ash.read!()
+      [%Member{first_name: "Greta", ...}]
+
+      iex> Member |> fuzzy_search(%{query: "gre"}) |> Ash.read!()  # typo-tolerant
+      [%Member{first_name: "Greta", ...}]
+
+  """
+  @spec fuzzy_search(Ash.Query.t(), keyword() | map()) :: Ash.Query.t()
   def fuzzy_search(query, opts) do
     q = (opts[:query] || opts["query"] || "") |> to_string()
 
@@ -377,4 +475,60 @@ defmodule Mv.Membership.Member do
       Ash.Query.for_read(query, :search, args)
     end
   end
+
+  # Private helper to apply filters for :available_for_linking action
+  # user_email: may be nil/empty when creating new user, or populated when editing
+  # search_query: optional search term for fuzzy matching
+  #
+  # Logic: (email == user_email) OR (fuzzy_search on search_query)
+  # - Empty user_email ("") → email == "" is always false → only fuzzy search matches
+  # - This allows a single filter expression instead of duplicating fuzzy search logic
+  #
+  # Cyclomatic complexity is unavoidable here: PostgreSQL fuzzy search requires
+  # multiple OR conditions for good search quality (FTS + trigram similarity + substring)
+  # credo:disable-for-next-line Credo.Check.Refactor.CyclomaticComplexity
+  defp apply_linking_filters(query, user_email, search_query) do
+    has_search = search_query && String.trim(search_query) != ""
+    # Use empty string instead of nil to simplify filter logic
+    trimmed_email = if user_email, do: String.trim(user_email), else: ""
+
+    if has_search do
+      # Search query provided: return email-match OR fuzzy-search candidates
+      trimmed_search = String.trim(search_query)
+
+      query
+      |> Ash.Query.filter(
+        expr(
+          # Email match candidate (for filter_by_email_match priority)
+          # If email is "", this is always false and fuzzy search takes over
+          # Fuzzy search candidates
+          email == ^trimmed_email or
+            fragment("search_vector @@ websearch_to_tsquery('simple', ?)", ^trimmed_search) or
+            fragment("search_vector @@ plainto_tsquery('simple', ?)", ^trimmed_search) or
+            fragment("? % first_name", ^trimmed_search) or
+            fragment("? % last_name", ^trimmed_search) or
+            fragment("word_similarity(?, first_name) > 0.2", ^trimmed_search) or
+            fragment(
+              "word_similarity(?, last_name) > ?",
+              ^trimmed_search,
+              ^@default_similarity_threshold
+            ) or
+            fragment(
+              "similarity(first_name, ?) > ?",
+              ^trimmed_search,
+              ^@default_similarity_threshold
+            ) or
+            fragment(
+              "similarity(last_name, ?) > ?",
+              ^trimmed_search,
+              ^@default_similarity_threshold
+            ) or
+            contains(email, ^trimmed_search)
+        )
+      )
+    else
+      # No search query: return all unlinked (filter_by_email_match will prioritize email if provided)
+      query
+    end
+  end
 end

lib/mv/accounts/user/validations/email_not_used_by_other_member.ex

@@ -41,18 +41,37 @@ defmodule Mv.Accounts.User.Validations.EmailNotUsedByOtherMember do
     if should_validate? do
       case Ash.Changeset.fetch_change(changeset, :email) do
         {:ok, new_email} ->
-          check_email_uniqueness(new_email, member_id)
+          # Extract member_id from relationship changes for new links
+          member_id_to_exclude = get_member_id_from_changeset(changeset)
+          check_email_uniqueness(new_email, member_id_to_exclude)
 
         :error ->
           # No email change, get current email
           current_email = Ash.Changeset.get_attribute(changeset, :email)
-          check_email_uniqueness(current_email, member_id)
+          # Extract member_id from relationship changes for new links
+          member_id_to_exclude = get_member_id_from_changeset(changeset)
+          check_email_uniqueness(current_email, member_id_to_exclude)
       end
     else
       :ok
     end
   end
 
+  # Extract member_id from changeset, checking relationship changes first
+  # This is crucial for new links where member_id is in manage_relationship changes
+  defp get_member_id_from_changeset(changeset) do
+    # Try to get from relationships (for new links via manage_relationship)
+    case Map.get(changeset.relationships, :member) do
+      [{[%{id: id}], _opts}] when not is_nil(id) ->
+        # Found in relationships - this is a new link
+        id
+
+      _ ->
+        # Fall back to attribute (for existing links)
+        Ash.Changeset.get_attribute(changeset, :member_id)
+    end
+  end
+
   defp check_email_uniqueness(email, exclude_member_id) do
     query =
       Mv.Membership.Member

lib/mv_web/components/core_components.ex

@@ -318,6 +318,13 @@ defmodule MvWeb.CoreComponents do
     default: &Function.identity/1,
     doc: "the function for mapping each row before calling the :col and :action slots"
 
+  attr :dynamic_cols, :list,
+    default: [],
+    doc: "list of dynamic column definitions with :custom_field and :render functions"
+
+  attr :sort_field, :any, default: nil, doc: "current sort field"
+  attr :sort_order, :atom, default: nil, doc: "current sort order"
+
   slot :col, required: true do
     attr :label, :string
   end
@@ -335,6 +342,16 @@ defmodule MvWeb.CoreComponents do
       <thead>
         <tr>
           <th :for={col <- @col}>{col[:label]}</th>
+          <th :for={dyn_col <- @dynamic_cols}>
+            <.live_component
+              module={MvWeb.Components.SortHeaderComponent}
+              id={:"sort_custom_field_#{dyn_col[:custom_field].id}"}
+              field={"custom_field_#{dyn_col[:custom_field].id}"}
+              label={dyn_col[:custom_field].name}
+              sort_field={@sort_field}
+              sort_order={@sort_order}
+            />
+          </th>
           <th :if={@action != []}>
             <span class="sr-only">{gettext("Actions")}</span>
           </th>
@@ -349,6 +366,23 @@ defmodule MvWeb.CoreComponents do
           >
             {render_slot(col, @row_item.(row))}
           </td>
+          <td
+            :for={dyn_col <- @dynamic_cols}
+            phx-click={@row_click && @row_click.(row)}
+            class={@row_click && "hover:cursor-pointer"}
+          >
+            {if dyn_col[:render] do
+              rendered = dyn_col[:render].(@row_item.(row))
+
+              if rendered == "" do
+                ""
+              else
+                rendered
+              end
+            else
+              ""
+            end}
+          </td>
           <td :if={@action != []} class="w-0 font-semibold">
             <div class="flex gap-4">
               <%= for action <- @action do %>

lib/mv_web/live/custom_field_live/form.ex

@@ -18,6 +18,7 @@ defmodule MvWeb.CustomFieldLive.Form do
   - description - Human-readable explanation
   - immutable - If true, values cannot be changed after creation (default: false)
   - required - If true, all members must have this custom field (default: false)
+  - show_in_overview - If true, this custom field will be displayed in the member overview table (default: true)
 
   ## Value Type Selection
   - `:string` - Text data (unlimited length)
@@ -60,6 +61,7 @@ defmodule MvWeb.CustomFieldLive.Form do
         <.input field={@form[:description]} type="text" label={gettext("Description")} />
         <.input field={@form[:immutable]} type="checkbox" label={gettext("Immutable")} />
         <.input field={@form[:required]} type="checkbox" label={gettext("Required")} />
+        <.input field={@form[:show_in_overview]} type="checkbox" label={gettext("Show in overview")} />
 
         <.button phx-disable-with={gettext("Saving...")} variant="primary">
           {gettext("Save Custom field")}

lib/mv_web/live/member_live/index.ex

@@ -26,6 +26,14 @@ defmodule MvWeb.MemberLive.Index do
   """
   use MvWeb, :live_view
 
+  require Ash.Query
+  import Ash.Expr
+
+  alias MvWeb.MemberLive.Index.Formatter
+
+  # Prefix used in sort field names for custom fields (e.g., "custom_field_<id>")
+  @custom_field_prefix "custom_field_"
+
   @doc """
   Initializes the LiveView state.
 
@@ -34,6 +42,16 @@ defmodule MvWeb.MemberLive.Index do
   """
   @impl true
   def mount(_params, _session, socket) do
+    # Load custom fields that should be shown in overview
+    # Note: Using Ash.read! (bang version) - errors will be handled by Phoenix LiveView
+    # and result in a 500 error page. This is appropriate for LiveViews where errors
+    # should be visible to the user rather than silently failing.
+    custom_fields_visible =
+      Mv.Membership.CustomField
+      |> Ash.Query.filter(expr(show_in_overview == true))
+      |> Ash.Query.sort(name: :asc)
+      |> Ash.read!()
+
     socket =
       socket
       |> assign(:page_title, gettext("Members"))
@@ -41,6 +59,7 @@ defmodule MvWeb.MemberLive.Index do
       |> assign_new(:sort_field, fn -> :first_name end)
       |> assign_new(:sort_order, fn -> :asc end)
       |> assign(:selected_members, [])
+      |> assign(:custom_fields_visible, custom_fields_visible)
 
     # We call handle params to use the query from the URL
     {:ok, socket}
@@ -60,6 +79,8 @@ defmodule MvWeb.MemberLive.Index do
   """
   @impl true
   def handle_event("delete", %{"id" => id}, socket) do
+    # Note: Using bang versions (!) - errors will be handled by Phoenix LiveView
+    # This ensures users see error messages if deletion fails (e.g., permission denied)
     member = Ash.get!(Mv.Membership.Member, id)
     Ash.destroy!(member)
 
@@ -108,7 +129,14 @@ defmodule MvWeb.MemberLive.Index do
   """
   @impl true
   def handle_info({:sort, field_str}, socket) do
-    field = String.to_existing_atom(field_str)
+    # Handle both atom and string field names (for custom fields)
+    field =
+      try do
+        String.to_existing_atom(field_str)
+      rescue
+        ArgumentError -> field_str
+      end
+
     {new_field, new_order} = determine_new_sort(field, socket)
 
     socket
@@ -158,10 +186,38 @@ defmodule MvWeb.MemberLive.Index do
       |> maybe_update_search(params)
       |> maybe_update_sort(params)
       |> load_members(params["query"])
+      |> prepare_dynamic_cols()
 
     {:noreply, socket}
   end
 
+  # Prepares dynamic column definitions for custom fields that should be shown in the overview.
+  #
+  # Creates a list of column definitions, each containing:
+  # - `:custom_field` - The CustomField resource
+  # - `:render` - A function that formats the custom field value for a given member
+  #
+  # Returns the socket with `:dynamic_cols` assigned.
+  defp prepare_dynamic_cols(socket) do
+    dynamic_cols =
+      Enum.map(socket.assigns.custom_fields_visible, fn custom_field ->
+        %{
+          custom_field: custom_field,
+          render: fn member ->
+            case get_custom_field_value(member, custom_field) do
+              nil ->
+                ""
+
+              cfv ->
+                Formatter.format_custom_field_value(cfv.value, custom_field)
+            end
+          end
+        }
+      end)
+
+    assign(socket, :dynamic_cols, dynamic_cols)
+  end
+
   # -------------------------------------------------------------
   # FUNCTIONS
   # -------------------------------------------------------------
@@ -177,8 +233,8 @@ defmodule MvWeb.MemberLive.Index do
 
   # Updates both the active and old SortHeader components
   defp update_sort_components(socket, old_field, new_field, new_order) do
-    active_id = :"sort_#{new_field}"
-    old_id = :"sort_#{old_field}"
+    active_id = to_sort_id(new_field)
+    old_id = to_sort_id(old_field)
 
     # Update the new SortHeader
     send_update(MvWeb.Components.SortHeaderComponent,
@@ -197,11 +253,32 @@ defmodule MvWeb.MemberLive.Index do
     socket
   end
 
+  # Converts a field (atom or string) to a sort component ID atom
+  # Handles both existing atoms and strings that need to be converted
+  defp to_sort_id(field) when is_binary(field) do
+    try do
+      String.to_existing_atom("sort_#{field}")
+    rescue
+      ArgumentError -> :"sort_#{field}"
+    end
+  end
+
+  defp to_sort_id(field) when is_atom(field) do
+    :"sort_#{field}"
+  end
+
   # Builds sort URL and pushes navigation patch
   defp push_sort_url(socket, field, order) do
+    field_str =
+      if is_atom(field) do
+        Atom.to_string(field)
+      else
+        field
+      end
+
     query_params = %{
       "query" => socket.assigns.query,
-      "sort_field" => Atom.to_string(field),
+      "sort_field" => field_str,
       "sort_order" => Atom.to_string(order)
     }
 
@@ -214,7 +291,24 @@ defmodule MvWeb.MemberLive.Index do
      )}
   end
 
-  # Load members eg based on a query for sorting
+  # Loads members from the database with custom field values and applies search/sort filters.
+  #
+  # Process:
+  # 1. Builds base query with selected fields
+  # 2. Loads custom field values for visible custom fields (filtered at database level)
+  # 3. Applies search filter if provided
+  # 4. Applies sorting (database-level for regular fields, in-memory for custom fields)
+  #
+  # Performance Considerations:
+  # - Database-level filtering: Custom field values are filtered directly in the database
+  #   using Ash relationship filters, reducing memory usage and improving performance.
+  # - In-memory sorting: Custom field sorting is done in memory after loading.
+  #   This is suitable for small to medium datasets (<1000 members).
+  #   For larger datasets, consider implementing database-level sorting or pagination.
+  # - No pagination: All matching members are loaded at once. For large result sets,
+  #   consider implementing pagination (see Issue #165).
+  #
+  # Returns the socket with `:members` assigned.
   defp load_members(socket, search_query) do
     query =
       Mv.Membership.Member
@@ -232,16 +326,71 @@ defmodule MvWeb.MemberLive.Index do
         :join_date
       ])
 
+    # Load custom field values for visible custom fields
+    custom_field_ids_list = Enum.map(socket.assigns.custom_fields_visible, & &1.id)
+    query = load_custom_field_values(query, custom_field_ids_list)
+
     # Apply the search filter first
     query = apply_search_filter(query, search_query)
 
     # Apply sorting based on current socket state
-    query = maybe_sort(query, socket.assigns.sort_field, socket.assigns.sort_order)
+    # For custom fields, we sort after loading
+    {query, sort_after_load} =
+      maybe_sort(
+        query,
+        socket.assigns.sort_field,
+        socket.assigns.sort_order,
+        socket.assigns.custom_fields_visible
+      )
 
+    # Note: Using Ash.read! - errors will be handled by Phoenix LiveView
+    # This is appropriate for data loading in LiveViews
     members = Ash.read!(query)
+
+    # Custom field values are already filtered at the database level in load_custom_field_values/2
+    # No need for in-memory filtering anymore
+
+    # Sort in memory if needed (for custom fields)
+    members =
+      if sort_after_load do
+        sort_members_in_memory(
+          members,
+          socket.assigns.sort_field,
+          socket.assigns.sort_order,
+          socket.assigns.custom_fields_visible
+        )
+      else
+        members
+      end
+
     assign(socket, :members, members)
   end
 
+  # Load custom field values for the given custom field IDs
+  #
+  # Filters custom field values directly in the database using Ash relationship filters.
+  # This is more efficient than loading all values and filtering in memory.
+  #
+  # Performance: Database-level filtering reduces:
+  # - Memory usage (only visible custom field values are loaded)
+  # - Network transfer (less data from database to application)
+  # - Processing time (no need to iterate through all members and filter)
+  defp load_custom_field_values(query, []) do
+    query
+  end
+
+  defp load_custom_field_values(query, custom_field_ids) when length(custom_field_ids) > 0 do
+    # Filter custom field values at the database level using Ash relationship query
+    # This ensures only visible custom field values are loaded
+    custom_field_values_query =
+      Mv.Membership.CustomFieldValue
+      |> Ash.Query.filter(expr(custom_field_id in ^custom_field_ids))
+      |> Ash.Query.load(custom_field: [:id, :name, :value_type])
+
+    query
+    |> Ash.Query.load(custom_field_values: custom_field_values_query)
+  end
+
   # -------------------------------------------------------------
   # Helper Functions
   # -------------------------------------------------------------
@@ -264,15 +413,24 @@ defmodule MvWeb.MemberLive.Index do
   defp toggle_order(nil), do: :asc
 
   # Function to sort the column if needed
-  defp maybe_sort(query, nil, _), do: query
+  # Returns {query, sort_after_load} where sort_after_load is true if we need to sort in memory
+  defp maybe_sort(query, nil, _, _), do: {query, false}
 
-  defp maybe_sort(query, field, :asc) when not is_nil(field),
-    do: Ash.Query.sort(query, [{field, :asc}])
+  defp maybe_sort(query, field, order, _custom_fields) when not is_nil(field) do
+    if custom_field_sort?(field) do
+      # Custom fields need to be sorted in memory after loading
+      {query, true}
+    else
+      # Only sort by atom fields (regular member fields) in database
+      if is_atom(field) do
+        {Ash.Query.sort(query, [{field, order}]), false}
+      else
+        {query, false}
+      end
+    end
+  end
 
-  defp maybe_sort(query, field, :desc) when not is_nil(field),
-    do: Ash.Query.sort(query, [{field, :desc}])
-
-  defp maybe_sort(query, _, _), do: query
+  defp maybe_sort(query, _, _, _), do: {query, false}
 
   # Validate that a field is sortable
   defp valid_sort_field?(field) when is_atom(field) do
@@ -288,12 +446,188 @@ defmodule MvWeb.MemberLive.Index do
       :join_date
     ]
 
-    field in valid_fields
+    field in valid_fields or custom_field_sort?(field)
+  end
+
+  defp valid_sort_field?(field) when is_binary(field) do
+    custom_field_sort?(field)
   end
 
   defp valid_sort_field?(_), do: false
 
-  # Function to maybe update the sort
+  # Check if field is a custom field sort field (format: custom_field_<id>)
+  defp custom_field_sort?(field) when is_atom(field) do
+    field_str = Atom.to_string(field)
+    String.starts_with?(field_str, @custom_field_prefix)
+  end
+
+  defp custom_field_sort?(field) when is_binary(field) do
+    String.starts_with?(field, @custom_field_prefix)
+  end
+
+  defp custom_field_sort?(_), do: false
+
+  # Extracts the custom field ID from a sort field name.
+  #
+  # Sort fields for custom fields use the format: "custom_field_<id>"
+  # This function extracts the ID part.
+  #
+  # Examples:
+  #   extract_custom_field_id("custom_field_123") -> "123"
+  #   extract_custom_field_id(:custom_field_123) -> "123"
+  #   extract_custom_field_id("first_name") -> nil
+  defp extract_custom_field_id(field) when is_atom(field) do
+    field_str = Atom.to_string(field)
+    extract_custom_field_id(field_str)
+  end
+
+  defp extract_custom_field_id(field) when is_binary(field) do
+    case String.split(field, @custom_field_prefix) do
+      ["", id_str] -> id_str
+      _ -> nil
+    end
+  end
+
+  defp extract_custom_field_id(_), do: nil
+
+  # Sorts members in memory by a custom field value.
+  #
+  # Process:
+  # 1. Extracts custom field ID from sort field name
+  # 2. Finds the corresponding CustomField resource
+  # 3. Splits members into those with values and those without
+  # 4. Sorts members with values by the extracted value
+  # 5. Combines: sorted values first, then NULL/empty values at the end
+  #
+  # Performance Note:
+  # This function sorts in memory, which is suitable for small to medium datasets (<1000 members).
+  # For larger datasets, consider implementing database-level sorting or pagination.
+  #
+  # Parameters:
+  # - `members` - List of Member resources to sort
+  # - `field` - Sort field name (format: "custom_field_<id>" or atom)
+  # - `order` - Sort order (`:asc` or `:desc`)
+  # - `custom_fields` - List of visible CustomField resources
+  #
+  # Returns the sorted list of members.
+  defp sort_members_in_memory(members, field, order, custom_fields) do
+    custom_field_id_str = extract_custom_field_id(field)
+
+    case custom_field_id_str do
+      nil ->
+        members
+
+      id_str ->
+        sort_members_by_custom_field(members, id_str, order, custom_fields)
+    end
+  end
+
+  # Sorts members by a specific custom field ID
+  defp sort_members_by_custom_field(members, id_str, order, custom_fields) do
+    custom_field = find_custom_field_by_id(custom_fields, id_str)
+
+    case custom_field do
+      nil ->
+        members
+
+      cf ->
+        sort_members_with_custom_field(members, cf, order)
+    end
+  end
+
+  # Finds a custom field by matching its ID string
+  defp find_custom_field_by_id(custom_fields, id_str) do
+    Enum.find(custom_fields, fn cf ->
+      to_string(cf.id) == id_str
+    end)
+  end
+
+  # Sorts members that have a specific custom field
+  defp sort_members_with_custom_field(members, custom_field, order) do
+    # Split members into those with values and those without (NULL/empty)
+    {members_with_values, members_without_values} =
+      split_members_by_value_presence(members, custom_field)
+
+    # Sort members with values
+    sorted_with_values = sort_members_with_values(members_with_values, custom_field, order)
+
+    # Combine: sorted values first, then NULL/empty values at the end
+    sorted_with_values ++ members_without_values
+  end
+
+  # Splits members into those with values and those without
+  defp split_members_by_value_presence(members, custom_field) do
+    Enum.split_with(members, fn member ->
+      has_non_empty_value?(member, custom_field)
+    end)
+  end
+
+  # Checks if a member has a non-empty value for the custom field
+  defp has_non_empty_value?(member, custom_field) do
+    case get_custom_field_value(member, custom_field) do
+      nil ->
+        false
+
+      cfv ->
+        extracted = extract_sort_value(cfv.value, custom_field.value_type)
+        not empty_value?(extracted, custom_field.value_type)
+    end
+  end
+
+  # Sorts members that have values for the custom field
+  defp sort_members_with_values(members_with_values, custom_field, order) do
+    sorted =
+      Enum.sort_by(members_with_values, fn member ->
+        cfv = get_custom_field_value(member, custom_field)
+        extracted = extract_sort_value(cfv.value, custom_field.value_type)
+        normalize_sort_value(extracted, order)
+      end)
+
+    # For DESC, reverse only the members with values
+    if order == :desc do
+      Enum.reverse(sorted)
+    else
+      sorted
+    end
+  end
+
+  # Extracts a sortable value from a custom field value based on its type.
+  #
+  # Handles different value formats:
+  # - `%Ash.Union{}` - Extracts value and type from union
+  # - Direct values - Returns as-is for primitive types
+  #
+  # Returns the extracted value suitable for sorting.
+  defp extract_sort_value(%Ash.Union{value: value, type: type}, _expected_type) do
+    extract_sort_value(value, type)
+  end
+
+  defp extract_sort_value(value, :string) when is_binary(value), do: value
+  defp extract_sort_value(value, :integer) when is_integer(value), do: value
+  defp extract_sort_value(value, :boolean) when is_boolean(value), do: value
+  defp extract_sort_value(%Date{} = date, :date), do: date
+  defp extract_sort_value(value, :email) when is_binary(value), do: value
+  defp extract_sort_value(value, _type), do: to_string(value)
+
+  # Check if a value is considered empty (NULL or empty string)
+  defp empty_value?(value, :string) when is_binary(value) do
+    String.trim(value) == ""
+  end
+
+  defp empty_value?(value, :email) when is_binary(value) do
+    String.trim(value) == ""
+  end
+
+  defp empty_value?(_value, _type), do: false
+
+  # Normalize sort value for DESC order
+  # For DESC, we sort ascending first, then reverse the list
+  # This function is kept for consistency but doesn't need to invert values
+  defp normalize_sort_value(value, _order), do: value
+
+  # Updates sort field and order from URL parameters if present.
+  #
+  # Validates the sort field and order, falling back to defaults if invalid.
   defp maybe_update_sort(socket, %{"sort_field" => sf, "sort_order" => so}) do
     field = determine_field(socket.assigns.sort_field, sf)
     order = determine_order(socket.assigns.sort_order, so)
@@ -305,33 +639,50 @@ defmodule MvWeb.MemberLive.Index do
 
   defp maybe_update_sort(socket, _), do: socket
 
-  defp determine_field(default, sf) do
-    case sf do
-      "" ->
-        default
+  # Determine sort field from URL parameter, validating against allowed fields
+  defp determine_field(default, ""), do: default
+  defp determine_field(default, nil), do: default
 
-      nil ->
-        default
-
-      sf when is_binary(sf) ->
-        sf
-        |> String.to_existing_atom()
-        |> handle_atom_conversion(default)
-
-      sf when is_atom(sf) ->
-        handle_atom_conversion(sf, default)
-
-      _ ->
-        default
+  # Determines the valid sort field from a URL parameter.
+  #
+  # Validates the field against allowed sort fields (regular member fields or custom fields).
+  # Falls back to default if the field is invalid.
+  #
+  # Parameters:
+  # - `default` - Default field to use if validation fails
+  # - `sf` - Sort field from URL (can be atom, string, nil, or empty string)
+  #
+  # Returns a valid sort field (atom or string for custom fields).
+  defp determine_field(default, sf) when is_binary(sf) do
+    # Check if it's a custom field sort (starts with "custom_field_")
+    if custom_field_sort?(sf) do
+      if valid_sort_field?(sf), do: sf, else: default
+    else
+      # Try to convert to atom for regular fields
+      try do
+        atom = String.to_existing_atom(sf)
+        if valid_sort_field?(atom), do: atom, else: default
+      rescue
+        ArgumentError -> default
+      end
     end
   end
 
-  defp handle_atom_conversion(val, default) when is_atom(val) do
-    if valid_sort_field?(val), do: val, else: default
+  defp determine_field(default, sf) when is_atom(sf) do
+    if valid_sort_field?(sf), do: sf, else: default
   end
 
-  defp handle_atom_conversion(_, default), do: default
+  defp determine_field(default, _), do: default
 
+  # Determines the valid sort order from a URL parameter.
+  #
+  # Validates that the order is either "asc" or "desc", falling back to default if invalid.
+  #
+  # Parameters:
+  # - `default` - Default order to use if validation fails
+  # - `so` - Sort order from URL (string, atom, nil, or empty string)
+  #
+  # Returns `:asc` or `:desc`.
   defp determine_order(default, so) do
     case so do
       "" -> default
@@ -350,4 +701,36 @@ defmodule MvWeb.MemberLive.Index do
     # Keep the previous search query if no new one is provided
     socket
   end
+
+  # -------------------------------------------------------------
+  # Helper Functions for Custom Field Values
+  # -------------------------------------------------------------
+
+  # Retrieves the custom field value for a specific member and custom field.
+  #
+  # Searches through the member's `custom_field_values` relationship to find
+  # the value matching the given custom field.
+  #
+  # Returns:
+  # - `%CustomFieldValue{}` if found
+  # - `nil` if not found or if member has no custom field values
+  #
+  # Examples:
+  #   get_custom_field_value(member, custom_field) -> %CustomFieldValue{...}
+  #   get_custom_field_value(member, non_existent_field) -> nil
+  def get_custom_field_value(member, custom_field) do
+    case member.custom_field_values do
+      nil ->
+        nil
+
+      values when is_list(values) ->
+        Enum.find(values, fn cfv ->
+          cfv.custom_field_id == custom_field.id or
+            (cfv.custom_field && cfv.custom_field.id == custom_field.id)
+        end)
+
+      _ ->
+        nil
+    end
+  end
 end

lib/mv_web/live/member_live/index.html.heex

@@ -19,6 +19,9 @@
     id="members"
     rows={@members}
     row_click={fn member -> JS.navigate(~p"/members/#{member}") end}
+    dynamic_cols={@dynamic_cols}
+    sort_field={@sort_field}
+    sort_order={@sort_order}
   >
     
 <!-- <:col :let={member} label="Id">{member.id}</:col> -->
@@ -185,7 +188,6 @@
     >
       {member.join_date}
     </:col>
-
     <:action :let={member}>
       <div class="sr-only">
         <.link navigate={~p"/members/#{member}"}>{gettext("Show")}</.link>

lib/mv_web/live/member_live/index/formatter.ex

@@ -0,0 +1,74 @@
+defmodule MvWeb.MemberLive.Index.Formatter do
+  @moduledoc """
+  Formats custom field values for display in the member overview table.
+
+  Handles different value types (string, integer, boolean, date, email) and
+  formats them appropriately for display in the UI.
+  """
+  use Gettext, backend: MvWeb.Gettext
+
+  @doc """
+  Formats a custom field value for display.
+
+  Handles different input formats:
+  - `nil` - Returns empty string
+  - `%Ash.Union{}` - Extracts value and type from union type
+  - Map (JSONB format) - Extracts type and value from map keys
+  - Direct value - Uses custom_field.value_type to determine format
+
+  ## Examples
+
+      iex> format_custom_field_value(nil, %CustomField{value_type: :string})
+      ""
+
+      iex> format_custom_field_value("test", %CustomField{value_type: :string})
+      "test"
+
+      iex> format_custom_field_value(true, %CustomField{value_type: :boolean})
+      "Yes"
+  """
+  def format_custom_field_value(nil, _custom_field), do: ""
+
+  def format_custom_field_value(%Ash.Union{value: value, type: type}, custom_field) do
+    format_value_by_type(value, type, custom_field)
+  end
+
+  def format_custom_field_value(value, custom_field) when is_map(value) do
+    # Handle map format from JSONB
+    type = Map.get(value, "type") || Map.get(value, "_union_type")
+    val = Map.get(value, "value") || Map.get(value, "_union_value")
+    format_value_by_type(val, type, custom_field)
+  end
+
+  def format_custom_field_value(value, custom_field) do
+    format_value_by_type(value, custom_field.value_type, custom_field)
+  end
+
+  # Format value based on type
+
+  defp format_value_by_type(value, :string, _), do: to_string(value)
+
+  defp format_value_by_type(value, :integer, _), do: to_string(value)
+
+  defp format_value_by_type(value, type, _) when type in [:string, :email] and is_binary(value) do
+    # Return empty string if value is empty
+    if String.trim(value) == "", do: "", else: value
+  end
+
+  defp format_value_by_type(value, :email, _), do: to_string(value)
+
+  defp format_value_by_type(value, :boolean, _) when value == true, do: gettext("Yes")
+  defp format_value_by_type(value, :boolean, _) when value == false, do: gettext("No")
+  defp format_value_by_type(value, :boolean, _), do: to_string(value)
+
+  defp format_value_by_type(%Date{} = date, :date, _), do: Date.to_string(date)
+
+  defp format_value_by_type(value, :date, _) when is_binary(value) do
+    case Date.from_iso8601(value) do
+      {:ok, date} -> Date.to_string(date)
+      _ -> value
+    end
+  end
+
+  defp format_value_by_type(value, _type, _), do: to_string(value)
+end

lib/mv_web/live/user_live/form.ex

@@ -120,6 +120,130 @@ defmodule MvWeb.UserLive.Form do
             <% end %>
           <% end %>
         </div>
+        
+    <!-- Member Linking Section -->
+        <div class="mt-6">
+          <h2 class="text-base font-semibold mb-3">{gettext("Linked Member")}</h2>
+
+          <%= if @user && @user.member && !@unlink_member do %>
+            <!-- Show linked member with unlink button -->
+            <div class="p-4 bg-green-50 border border-green-200 rounded-lg">
+              <div class="flex items-center justify-between">
+                <div>
+                  <p class="font-medium text-green-900">
+                    {@user.member.first_name} {@user.member.last_name}
+                  </p>
+                  <p class="text-sm text-green-700">{@user.member.email}</p>
+                </div>
+                <button
+                  type="button"
+                  phx-click="unlink_member"
+                  class="btn btn-sm btn-error"
+                >
+                  {gettext("Unlink Member")}
+                </button>
+              </div>
+            </div>
+          <% else %>
+            <%= if @unlink_member do %>
+              <!-- Show unlink pending message -->
+              <div class="p-4 bg-yellow-50 border border-yellow-200 rounded-lg">
+                <p class="text-sm text-yellow-800">
+                  <strong>{gettext("Unlinking scheduled")}:</strong> {gettext(
+                    "Member will be unlinked when you save. Cannot select new member until saved."
+                  )}
+                </p>
+              </div>
+            <% end %>
+            <!-- Show member search/selection for unlinked users -->
+            <div class="space-y-3">
+              <div class="relative">
+                <input
+                  type="text"
+                  id="member-search-input"
+                  role="combobox"
+                  phx-hook="ComboBox"
+                  phx-focus="show_member_dropdown"
+                  phx-change="search_members"
+                  phx-debounce="300"
+                  phx-window-keydown="member_dropdown_keydown"
+                  value={@member_search_query}
+                  placeholder={gettext("Search for a member to link...")}
+                  class="w-full input"
+                  name="member_search"
+                  disabled={@unlink_member}
+                  aria-label={gettext("Search for member to link")}
+                  aria-describedby={if @selected_member_name, do: "member-selected", else: nil}
+                  aria-autocomplete="list"
+                  aria-controls="member-dropdown"
+                  aria-expanded={to_string(@show_member_dropdown)}
+                  aria-activedescendant={
+                    if @focused_member_index,
+                      do: "member-option-#{@focused_member_index}",
+                      else: nil
+                  }
+                  autocomplete="off"
+                />
+
+                <%= if length(@available_members) > 0 do %>
+                  <div
+                    id="member-dropdown"
+                    role="listbox"
+                    aria-label={gettext("Available members")}
+                    class={"absolute z-10 w-full mt-1 bg-base-100 border border-base-300 rounded-lg shadow-lg max-h-60 overflow-auto #{if !@show_member_dropdown, do: "hidden"}"}
+                    phx-click-away="hide_member_dropdown"
+                  >
+                    <%= for {member, index} <- Enum.with_index(@available_members) do %>
+                      <div
+                        id={"member-option-#{index}"}
+                        role="option"
+                        tabindex="0"
+                        aria-selected={to_string(@focused_member_index == index)}
+                        phx-click="select_member"
+                        phx-value-id={member.id}
+                        data-member-id={member.id}
+                        class={[
+                          "px-4 py-3 cursor-pointer border-b border-base-300 last:border-b-0",
+                          if(@focused_member_index == index,
+                            do: "bg-base-300",
+                            else: "hover:bg-base-200"
+                          )
+                        ]}
+                      >
+                        <p class="font-medium">{member.first_name} {member.last_name}</p>
+                        <p class="text-sm text-base-content/70">{member.email}</p>
+                      </div>
+                    <% end %>
+                  </div>
+                <% end %>
+              </div>
+
+              <%= if @user && @user.email && @available_members != [] && Enum.all?(@available_members, &(&1.email == to_string(@user.email))) do %>
+                <div class="p-3 bg-yellow-50 border border-yellow-200 rounded">
+                  <p class="text-sm text-yellow-800">
+                    <strong>{gettext("Note")}:</strong> {gettext(
+                      "A member with this email already exists. To link with a different member, please change one of the email addresses first."
+                    )}
+                  </p>
+                </div>
+              <% end %>
+
+              <%= if @selected_member_id && @selected_member_name do %>
+                <div
+                  id="member-selected"
+                  class="mt-2 p-3 bg-blue-50 border border-blue-200 rounded-lg"
+                >
+                  <p class="text-sm text-blue-800">
+                    <strong>{gettext("Selected")}:</strong> {@selected_member_name}
+                  </p>
+                  <p class="text-xs text-blue-600 mt-1">
+                    {gettext("Save to confirm linking.")}
+                  </p>
+                </div>
+              <% end %>
+            </div>
+          <% end %>
+        </div>
 
         <.button phx-disable-with={gettext("Saving...")} variant="primary">
           {gettext("Save User")}
@@ -135,7 +259,7 @@ defmodule MvWeb.UserLive.Form do
     user =
       case params["id"] do
         nil -> nil
-        id -> Ash.get!(Mv.Accounts.User, id, domain: Mv.Accounts)
+        id -> Ash.get!(Mv.Accounts.User, id, domain: Mv.Accounts, load: [:member])
       end
 
     action = if is_nil(user), do: gettext("New"), else: gettext("Edit")
@@ -147,9 +271,18 @@ defmodule MvWeb.UserLive.Form do
      |> assign(user: user)
      |> assign(:page_title, page_title)
      |> assign(:show_password_fields, false)
+     |> assign(:member_search_query, "")
+     |> assign(:available_members, [])
+     |> assign(:show_member_dropdown, false)
+     |> assign(:selected_member_id, nil)
+     |> assign(:selected_member_name, nil)
+     |> assign(:unlink_member, false)
+     |> assign(:focused_member_index, nil)
+     |> load_initial_members()
      |> assign_form()}
   end
 
+  @spec return_to(String.t() | nil) :: String.t()
   defp return_to("show"), do: "show"
   defp return_to(_), do: "index"
 
@@ -166,28 +299,201 @@ defmodule MvWeb.UserLive.Form do
   end
 
   def handle_event("validate", %{"user" => user_params}, socket) do
-    {:noreply, assign(socket, form: AshPhoenix.Form.validate(socket.assigns.form, user_params))}
+    validated_form = AshPhoenix.Form.validate(socket.assigns.form, user_params)
+
+    # Reload members if email changed (for email-match priority)
+    socket =
+      if Map.has_key?(user_params, "email") do
+        user_email = user_params["email"]
+        members = load_members_for_linking(user_email, socket.assigns.member_search_query)
+
+        assign(socket, form: validated_form, available_members: members)
+      else
+        assign(socket, form: validated_form)
+      end
+
+    {:noreply, socket}
   end
 
   def handle_event("save", %{"user" => user_params}, socket) do
+    # First save the user without member changes
     case AshPhoenix.Form.submit(socket.assigns.form, params: user_params) do
       {:ok, user} ->
-        notify_parent({:saved, user})
+        # Then handle member linking/unlinking as a separate step
+        result =
+          cond do
+            # Selected member ID takes precedence (new link)
+            socket.assigns.selected_member_id ->
+              Mv.Accounts.update_user(user, %{member: %{id: socket.assigns.selected_member_id}})
 
-        socket =
-          socket
-          |> put_flash(:info, "User #{socket.assigns.form.source.type}d successfully")
-          |> push_navigate(to: return_path(socket.assigns.return_to, user))
+            # Unlink flag is set
+            socket.assigns[:unlink_member] ->
+              Mv.Accounts.update_user(user, %{member: nil})
 
-        {:noreply, socket}
+            # No changes to member relationship
+            true ->
+              {:ok, user}
+          end
+
+        case result do
+          {:ok, updated_user} ->
+            notify_parent({:saved, updated_user})
+
+            socket =
+              socket
+              |> put_flash(:info, "User #{socket.assigns.form.source.type}d successfully")
+              |> push_navigate(to: return_path(socket.assigns.return_to, updated_user))
+
+            {:noreply, socket}
+
+          {:error, error} ->
+            # Show user-friendly error from member linking/unlinking
+            error_message = extract_error_message(error)
+
+            {:noreply,
+             put_flash(
+               socket,
+               :error,
+               gettext("Failed to link member: %{error}", error: error_message)
+             )}
+        end
 
       {:error, form} ->
         {:noreply, assign(socket, form: form)}
     end
   end
 
+  def handle_event("show_member_dropdown", _params, socket) do
+    {:noreply, assign(socket, show_member_dropdown: true)}
+  end
+
+  def handle_event("hide_member_dropdown", _params, socket) do
+    {:noreply, assign(socket, show_member_dropdown: false, focused_member_index: nil)}
+  end
+
+  def handle_event("member_dropdown_keydown", %{"key" => "ArrowDown"}, socket) do
+    return_if_dropdown_closed(socket, fn ->
+      max_index = length(socket.assigns.available_members) - 1
+      current = socket.assigns.focused_member_index
+
+      new_index =
+        case current do
+          nil -> 0
+          index when index < max_index -> index + 1
+          _ -> current
+        end
+
+      {:noreply, assign(socket, focused_member_index: new_index)}
+    end)
+  end
+
+  def handle_event("member_dropdown_keydown", %{"key" => "ArrowUp"}, socket) do
+    return_if_dropdown_closed(socket, fn ->
+      current = socket.assigns.focused_member_index
+
+      new_index =
+        case current do
+          nil -> 0
+          0 -> 0
+          index -> index - 1
+        end
+
+      {:noreply, assign(socket, focused_member_index: new_index)}
+    end)
+  end
+
+  def handle_event("member_dropdown_keydown", %{"key" => "Enter"}, socket) do
+    return_if_dropdown_closed(socket, fn ->
+      select_focused_member(socket)
+    end)
+  end
+
+  def handle_event("member_dropdown_keydown", %{"key" => "Escape"}, socket) do
+    return_if_dropdown_closed(socket, fn ->
+      {:noreply, assign(socket, show_member_dropdown: false, focused_member_index: nil)}
+    end)
+  end
+
+  def handle_event("member_dropdown_keydown", _params, socket) do
+    # Ignore other keys
+    {:noreply, socket}
+  end
+
+  def handle_event("search_members", %{"member_search" => query}, socket) do
+    socket =
+      socket
+      |> assign(:member_search_query, query)
+      |> load_available_members(query)
+      |> assign(:show_member_dropdown, true)
+      |> assign(:focused_member_index, nil)
+
+    {:noreply, socket}
+  end
+
+  def handle_event("select_member", %{"id" => member_id}, socket) do
+    # Find the selected member to get their name
+    selected_member = Enum.find(socket.assigns.available_members, &(&1.id == member_id))
+
+    member_name =
+      if selected_member,
+        do: "#{selected_member.first_name} #{selected_member.last_name}",
+        else: ""
+
+    # Store the selected member ID and name in socket state and clear unlink flag
+    socket =
+      socket
+      |> assign(:selected_member_id, member_id)
+      |> assign(:selected_member_name, member_name)
+      |> assign(:unlink_member, false)
+      |> assign(:show_member_dropdown, false)
+      |> assign(:member_search_query, member_name)
+      |> push_event("set-input-value", %{id: "member-search-input", value: member_name})
+
+    {:noreply, socket}
+  end
+
+  def handle_event("unlink_member", _params, socket) do
+    # Set flag to unlink member on save
+    # Clear all member selection state and keep dropdown hidden
+    socket =
+      socket
+      |> assign(:unlink_member, true)
+      |> assign(:selected_member_id, nil)
+      |> assign(:selected_member_name, nil)
+      |> assign(:member_search_query, "")
+      |> assign(:show_member_dropdown, false)
+      |> load_initial_members()
+
+    {:noreply, socket}
+  end
+
+  @spec notify_parent(any()) :: any()
   defp notify_parent(msg), do: send(self(), {__MODULE__, msg})
 
+  # Helper to ignore keyboard events when dropdown is closed
+  @spec return_if_dropdown_closed(Phoenix.LiveView.Socket.t(), function()) ::
+          {:noreply, Phoenix.LiveView.Socket.t()}
+  defp return_if_dropdown_closed(socket, func) do
+    if socket.assigns.show_member_dropdown do
+      func.()
+    else
+      {:noreply, socket}
+    end
+  end
+
+  # Select the currently focused member from the dropdown
+  @spec select_focused_member(Phoenix.LiveView.Socket.t()) ::
+          {:noreply, Phoenix.LiveView.Socket.t()}
+  defp select_focused_member(socket) do
+    with index when not is_nil(index) <- socket.assigns.focused_member_index,
+         member when not is_nil(member) <- Enum.at(socket.assigns.available_members, index) do
+      handle_event("select_member", %{"id" => member.id}, socket)
+    else
+      _ -> {:noreply, socket}
+    end
+  end
+
+  @spec assign_form(Phoenix.LiveView.Socket.t()) :: Phoenix.LiveView.Socket.t()
   defp assign_form(%{assigns: %{user: user, show_password_fields: show_password_fields}} = socket) do
     form =
       if user do
@@ -207,6 +513,71 @@ defmodule MvWeb.UserLive.Form do
     assign(socket, form: to_form(form))
   end
 
+  @spec return_path(String.t(), Mv.Accounts.User.t() | nil) :: String.t()
   defp return_path("index", _user), do: ~p"/users"
   defp return_path("show", user), do: ~p"/users/#{user.id}"
+
+  @spec load_initial_members(Phoenix.LiveView.Socket.t()) :: Phoenix.LiveView.Socket.t()
+  defp load_initial_members(socket) do
+    user = socket.assigns.user
+    user_email = if user, do: user.email, else: nil
+
+    members = load_members_for_linking(user_email, "")
+
+    # Dropdown should ALWAYS be hidden initially
+    # It will only show when user focuses the input field (show_member_dropdown event)
+    socket
+    |> assign(available_members: members)
+    |> assign(show_member_dropdown: false)
+  end
+
+  @spec load_available_members(Phoenix.LiveView.Socket.t(), String.t()) ::
+          Phoenix.LiveView.Socket.t()
+  defp load_available_members(socket, query) do
+    user = socket.assigns.user
+    user_email = if user, do: user.email, else: nil
+
+    members = load_members_for_linking(user_email, query)
+    assign(socket, available_members: members)
+  end
+
+  @spec load_members_for_linking(String.t() | nil, String.t() | nil) :: [Mv.Membership.Member.t()]
+  defp load_members_for_linking(user_email, search_query) do
+    user_email_str = if user_email, do: to_string(user_email), else: nil
+    search_query_str = if search_query && search_query != "", do: search_query, else: nil
+
+    query =
+      Mv.Membership.Member
+      |> Ash.Query.for_read(:available_for_linking, %{
+        user_email: user_email_str,
+        search_query: search_query_str
+      })
+
+    case Ash.read(query, domain: Mv.Membership) do
+      {:ok, members} ->
+        # Apply email match filter if user_email is provided
+        if user_email_str do
+          Mv.Membership.Member.filter_by_email_match(members, user_email_str)
+        else
+          members
+        end
+
+      {:error, _} ->
+        []
+    end
+  end
+
+  # Extract user-friendly error message from Ash.Error
+  @spec extract_error_message(any()) :: String.t()
+  defp extract_error_message(%Ash.Error.Invalid{errors: errors}) when is_list(errors) do
+    # Take first error and extract message
+    case List.first(errors) do
+      %{message: message} when is_binary(message) -> message
+      %{field: field, message: message} -> "#{field}: #{message}"
+      _ -> "Unknown error"
+    end
+  end
+
+  defp extract_error_message(error) when is_binary(error), do: error
+  defp extract_error_message(_), do: "Unknown error"
 end

lib/mv_web/live/user_live/index.ex

@@ -25,7 +25,7 @@ defmodule MvWeb.UserLive.Index do
 
   @impl true
   def mount(_params, _session, socket) do
-    users = Ash.read!(Mv.Accounts.User, domain: Mv.Accounts)
+    users = Ash.read!(Mv.Accounts.User, domain: Mv.Accounts, load: [:member])
     sorted = Enum.sort_by(users, & &1.email)
 
     {:ok,

lib/mv_web/live/user_live/index.html.heex

@@ -50,6 +50,13 @@
       {user.email}
     </:col>
     <:col :let={user} label={gettext("OIDC ID")}>{user.oidc_id}</:col>
+    <:col :let={user} label={gettext("Linked Member")}>
+      <%= if user.member do %>
+        {user.member.first_name} {user.member.last_name}
+      <% else %>
+        <span class="text-base-content/50">{gettext("No member linked")}</span>
+      <% end %>
+    </:col>
 
     <:action :let={user}>
       <div class="sr-only">

mix.lock

@@ -16,7 +16,7 @@
   "comeonin": {:hex, :comeonin, "5.5.1", "5113e5f3800799787de08a6e0db307133850e635d34e9fab23c70b6501669510", [:mix], [], "hexpm", "65aac8f19938145377cee73973f192c5645873dcf550a8a6b18187d17c13ccdb"},
   "credo": {:hex, :credo, "1.7.13", "126a0697df6b7b71cd18c81bc92335297839a806b6f62b61d417500d1070ff4e", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "47641e6d2bbff1e241e87695b29f617f1a8f912adea34296fb10ecc3d7e9e84f"},
   "crux": {:hex, :crux, "0.1.1", "94f2f97d2a6079ae3c57f356412bc3b307f9579a80e43f526447b1d508dd4a72", [:mix], [{:picosat_elixir, "~> 0.2", [hex: :picosat_elixir, repo: "hexpm", optional: true]}, {:simple_sat, ">= 0.1.1 and < 1.0.0-0", [hex: :simple_sat, repo: "hexpm", optional: true]}, {:stream_data, "~> 1.0", [hex: :stream_data, repo: "hexpm", optional: true]}], "hexpm", "e59d498f038193cbe31e448f9199f5b4c53a4c67cece9922bb839595189dd2b6"},
-  "db_connection": {:hex, :db_connection, "2.8.1", "9abdc1e68c34c6163f6fb96a96532272d13ad7ca45262156ae8b7ec6d9dc4bec", [], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "a61a3d489b239d76f326e03b98794fb8e45168396c925ef25feb405ed09da8fd"},
+  "db_connection": {:hex, :db_connection, "2.8.1", "9abdc1e68c34c6163f6fb96a96532272d13ad7ca45262156ae8b7ec6d9dc4bec", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "a61a3d489b239d76f326e03b98794fb8e45168396c925ef25feb405ed09da8fd"},
   "decimal": {:hex, :decimal, "2.3.0", "3ad6255aa77b4a3c4f818171b12d237500e63525c2fd056699967a3e7ea20f62", [:mix], [], "hexpm", "a4d66355cb29cb47c3cf30e71329e58361cfcb37c34235ef3bf1d7bf3773aeac"},
   "dns_cluster": {:hex, :dns_cluster, "0.2.0", "aa8eb46e3bd0326bd67b84790c561733b25c5ba2fe3c7e36f28e88f384ebcb33", [:mix], [], "hexpm", "ba6f1893411c69c01b9e8e8f772062535a4cf70f3f35bcc964a324078d8c8240"},
   "ecto": {:hex, :ecto, "3.13.3", "6a983f0917f8bdc7a89e96f2bf013f220503a0da5d8623224ba987515b3f0d80", [:mix], [{:decimal, "~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "1927db768f53a88843ff25b6ba7946599a8ca8a055f69ad8058a1432a399af94"},
@@ -80,7 +80,7 @@
   "telemetry_metrics": {:hex, :telemetry_metrics, "1.1.0", "5bd5f3b5637e0abea0426b947e3ce5dd304f8b3bc6617039e2b5a008adc02f8f", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "e7b79e8ddfde70adb6db8a6623d1778ec66401f366e9a8f5dd0955c56bc8ce67"},
   "telemetry_poller": {:hex, :telemetry_poller, "1.3.0", "d5c46420126b5ac2d72bc6580fb4f537d35e851cc0f8dbd571acf6d6e10f5ec7", [:rebar3], [{:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "51f18bed7128544a50f75897db9974436ea9bfba560420b646af27a9a9b35211"},
   "text_diff": {:hex, :text_diff, "0.1.0", "1caf3175e11a53a9a139bc9339bd607c47b9e376b073d4571c031913317fecaa", [:mix], [], "hexpm", "d1ffaaecab338e49357b6daa82e435f877e0649041ace7755583a0ea3362dbd7"},
-  "thousand_island": {:hex, :thousand_island, "1.4.1", "8df065e627407e281f7935da5ad0f3842d10eb721afa92e760b720d71e2e37aa", [], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "204a8640e5d2818589b87286ae66160978628d7edf6095181cbe0440765fb6c1"},
+  "thousand_island": {:hex, :thousand_island, "1.4.1", "8df065e627407e281f7935da5ad0f3842d10eb721afa92e760b720d71e2e37aa", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "204a8640e5d2818589b87286ae66160978628d7edf6095181cbe0440765fb6c1"},
   "tidewave": {:hex, :tidewave, "0.5.0", "8f278d7eb2d0af36ae6d4f73a5872bd066815bd57b57401125187ba901f095a4", [:mix], [{:circular_buffer, "~> 0.4 or ~> 1.0", [hex: :circular_buffer, repo: "hexpm", optional: false]}, {:igniter, "~> 0.6", [hex: :igniter, repo: "hexpm", optional: true]}, {:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}, {:phoenix_live_reload, ">= 1.6.1", [hex: :phoenix_live_reload, repo: "hexpm", optional: true]}, {:plug, "~> 1.17", [hex: :plug, repo: "hexpm", optional: false]}, {:req, "~> 0.5", [hex: :req, repo: "hexpm", optional: false]}], "hexpm", "9a1eb5d2f12ff4912328dfbfe652c27fded462c6ed6fd11814ee28d3e9d016b4"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.1", "a48703a25c170eedadca83b11e88985af08d35f37c6f664d6dcfb106a97782fc", [:rebar3], [], "hexpm", "b3a917854ce3ae233619744ad1e0102e05673136776fb2fa76234f3e03b23642"},
   "websock": {:hex, :websock, "0.5.3", "2f69a6ebe810328555b6fe5c831a851f485e303a7c8ce6c5f675abeb20ebdadc", [:mix], [], "hexpm", "6105453d7fac22c712ad66fab1d45abdf049868f253cf719b625151460b8b453"},

notes.md

@@ -0,0 +1,58 @@
+# User-Member Association - Test Status
+
+## Test Files Created/Modified
+
+### 1. test/membership/member_available_for_linking_test.exs (NEU)
+**Status**: Alle Tests sollten FEHLSCHLAGEN ❌  
+**Grund**: Die `:available_for_linking` Action existiert noch nicht
+
+Tests:
+- ✗ returns only unlinked members and limits to 10
+- ✗ limits results to 10 members even when more exist
+- ✗ email match: returns only member with matching email when exists
+- ✗ email match: returns all unlinked members when no email match
+- ✗ search query: filters by first_name, last_name, and email
+- ✗ email match takes precedence over search query
+
+### 2. test/accounts/user_member_linking_test.exs (NEU)
+**Status**: Tests sollten teilweise ERFOLGREICH sein ✅ / teilweise FEHLSCHLAGEN ❌
+
+Tests:
+- ✓ link user to member with different email syncs member email (sollte BESTEHEN - Email-Sync ist implementiert)
+- ✓ unlink member from user sets member to nil (sollte BESTEHEN - Unlink ist implementiert)
+- ✓ cannot link member already linked to another user (sollte BESTEHEN - Validierung existiert)
+- ✓ cannot change member link directly, must unlink first (sollte BESTEHEN - Validierung existiert)
+
+### 3. test/mv_web/user_live/form_test.exs (ERWEITERT)
+**Status**: Alle neuen Tests sollten FEHLSCHLAGEN ❌  
+**Grund**: Member-Linking UI ist noch nicht implementiert
+
+Neue Tests:
+- ✗ shows linked member with unlink button when user has member
+- ✗ shows member search field when user has no member
+- ✗ selecting member and saving links member to user
+- ✗ unlinking member and saving removes member from user
+
+### 4. test/mv_web/user_live/index_test.exs (ERWEITERT)
+**Status**: Neuer Test sollte FEHLSCHLAGEN ❌  
+**Grund**: Member-Spalte wird noch nicht in der Index-View angezeigt
+
+Neuer Test:
+- ✗ displays linked member name in user list
+
+## Zusammenfassung
+
+**Tests gesamt**: 13  
+**Sollten BESTEHEN**: 4 (Backend-Validierungen bereits vorhanden)  
+**Sollten FEHLSCHLAGEN**: 9 (Features noch nicht implementiert)
+
+## Nächste Schritte
+
+1. Implementiere `:available_for_linking` Action in `lib/membership/member.ex`
+2. Erstelle `MemberAutocompleteComponent` in `lib/mv_web/live/components/member_autocomplete_component.ex`
+3. Integriere Member-Linking UI in `lib/mv_web/live/user_live/form.ex`
+4. Füge Member-Spalte zu `lib/mv_web/live/user_live/index.ex` hinzu
+5. Füge Gettext-Übersetzungen hinzu
+
+Nach jeder Implementierung: Tests erneut ausführen und prüfen, ob sie grün werden.
+

priv/gettext/de/LC_MESSAGES/default.po

@@ -10,12 +10,12 @@ msgid ""
 msgstr ""
 "Language: en\n"
 
-#: lib/mv_web/components/core_components.ex:339
+#: lib/mv_web/components/core_components.ex:356
 #, elixir-autogen, elixir-format
 msgid "Actions"
 msgstr "Aktionen"
 
-#: lib/mv_web/live/member_live/index.html.heex:200
+#: lib/mv_web/live/member_live/index.html.heex:202
 #: lib/mv_web/live/user_live/index.html.heex:65
 #, elixir-autogen, elixir-format
 msgid "Are you sure?"
@@ -28,19 +28,19 @@ msgid "Attempting to reconnect"
 msgstr "Verbindung wird wiederhergestellt"
 
 #: lib/mv_web/live/member_live/form.ex:54
-#: lib/mv_web/live/member_live/index.html.heex:145
+#: lib/mv_web/live/member_live/index.html.heex:148
 #: lib/mv_web/live/member_live/show.ex:59
 #, elixir-autogen, elixir-format
 msgid "City"
 msgstr "Stadt"
 
-#: lib/mv_web/live/member_live/index.html.heex:202
+#: lib/mv_web/live/member_live/index.html.heex:204
 #: lib/mv_web/live/user_live/index.html.heex:67
 #, elixir-autogen, elixir-format
 msgid "Delete"
 msgstr "Löschen"
 
-#: lib/mv_web/live/member_live/index.html.heex:194
+#: lib/mv_web/live/member_live/index.html.heex:196
 #: lib/mv_web/live/user_live/form.ex:141
 #: lib/mv_web/live/user_live/index.html.heex:59
 #, elixir-autogen, elixir-format
@@ -54,7 +54,7 @@ msgid "Edit Member"
 msgstr "Mitglied bearbeiten"
 
 #: lib/mv_web/live/member_live/form.ex:47
-#: lib/mv_web/live/member_live/index.html.heex:77
+#: lib/mv_web/live/member_live/index.html.heex:80
 #: lib/mv_web/live/member_live/show.ex:50
 #: lib/mv_web/live/user_live/form.ex:46
 #: lib/mv_web/live/user_live/index.html.heex:44
@@ -70,7 +70,7 @@ msgid "First Name"
 msgstr "Vorname"
 
 #: lib/mv_web/live/member_live/form.ex:51
-#: lib/mv_web/live/member_live/index.html.heex:179
+#: lib/mv_web/live/member_live/index.html.heex:182
 #: lib/mv_web/live/member_live/show.ex:56
 #, elixir-autogen, elixir-format
 msgid "Join Date"
@@ -87,7 +87,7 @@ msgstr "Nachname"
 msgid "New Member"
 msgstr "Neues Mitglied"
 
-#: lib/mv_web/live/member_live/index.html.heex:191
+#: lib/mv_web/live/member_live/index.html.heex:193
 #: lib/mv_web/live/user_live/index.html.heex:56
 #, elixir-autogen, elixir-format
 msgid "Show"
@@ -121,7 +121,7 @@ msgid "Exit Date"
 msgstr "Austrittsdatum"
 
 #: lib/mv_web/live/member_live/form.ex:56
-#: lib/mv_web/live/member_live/index.html.heex:111
+#: lib/mv_web/live/member_live/index.html.heex:114
 #: lib/mv_web/live/member_live/show.ex:61
 #, elixir-autogen, elixir-format
 msgid "House Number"
@@ -140,14 +140,14 @@ msgid "Paid"
 msgstr "Bezahlt"
 
 #: lib/mv_web/live/member_live/form.ex:50
-#: lib/mv_web/live/member_live/index.html.heex:162
+#: lib/mv_web/live/member_live/index.html.heex:165
 #: lib/mv_web/live/member_live/show.ex:55
 #, elixir-autogen, elixir-format
 msgid "Phone Number"
 msgstr "Telefonnummer"
 
 #: lib/mv_web/live/member_live/form.ex:57
-#: lib/mv_web/live/member_live/index.html.heex:128
+#: lib/mv_web/live/member_live/index.html.heex:131
 #: lib/mv_web/live/member_live/show.ex:62
 #, elixir-autogen, elixir-format
 msgid "Postal Code"
@@ -158,17 +158,17 @@ msgstr "Postleitzahl"
 msgid "Save Member"
 msgstr "Mitglied speichern"
 
-#: lib/mv_web/live/custom_field_live/form.ex:64
+#: lib/mv_web/live/custom_field_live/form.ex:66
 #: lib/mv_web/live/custom_field_value_live/form.ex:74
 #: lib/mv_web/live/global_settings_live.ex:55
 #: lib/mv_web/live/member_live/form.ex:79
-#: lib/mv_web/live/user_live/form.ex:124
+#: lib/mv_web/live/user_live/form.ex:234
 #, elixir-autogen, elixir-format
 msgid "Saving..."
 msgstr "Speichern..."
 
 #: lib/mv_web/live/member_live/form.ex:55
-#: lib/mv_web/live/member_live/index.html.heex:94
+#: lib/mv_web/live/member_live/index.html.heex:97
 #: lib/mv_web/live/member_live/show.ex:60
 #, elixir-autogen, elixir-format
 msgid "Street"
@@ -184,6 +184,7 @@ msgstr "Dieses Formular dient zur Verwaltung von Mitgliedern und deren Eigenscha
 msgid "Id"
 msgstr "ID"
 
+#: lib/mv_web/live/member_live/index/formatter.ex:65
 #: lib/mv_web/live/member_live/show.ex:53
 #, elixir-autogen, elixir-format
 msgid "No"
@@ -199,19 +200,20 @@ msgstr "Mitglied anzeigen"
 msgid "This is a member record from your database."
 msgstr "Dies ist ein Mitglied aus deiner Datenbank."
 
+#: lib/mv_web/live/member_live/index/formatter.ex:64
 #: lib/mv_web/live/member_live/show.ex:53
 #, elixir-autogen, elixir-format
 msgid "Yes"
 msgstr "Ja"
 
-#: lib/mv_web/live/custom_field_live/form.ex:108
+#: lib/mv_web/live/custom_field_live/form.ex:110
 #: lib/mv_web/live/custom_field_value_live/form.ex:233
 #: lib/mv_web/live/member_live/form.ex:138
 #, elixir-autogen, elixir-format
 msgid "create"
 msgstr "erstellt"
 
-#: lib/mv_web/live/custom_field_live/form.ex:109
+#: lib/mv_web/live/custom_field_live/form.ex:111
 #: lib/mv_web/live/custom_field_value_live/form.ex:234
 #: lib/mv_web/live/member_live/form.ex:139
 #, elixir-autogen, elixir-format
@@ -253,11 +255,11 @@ msgstr "Ihre E-Mail-Adresse wurde bestätigt"
 msgid "Your password has successfully been reset"
 msgstr "Ihr Passwort wurde erfolgreich zurückgesetzt"
 
-#: lib/mv_web/live/custom_field_live/form.ex:67
+#: lib/mv_web/live/custom_field_live/form.ex:69
 #: lib/mv_web/live/custom_field_live/index.ex:120
 #: lib/mv_web/live/custom_field_value_live/form.ex:77
 #: lib/mv_web/live/member_live/form.ex:82
-#: lib/mv_web/live/user_live/form.ex:127
+#: lib/mv_web/live/user_live/form.ex:237
 #, elixir-autogen, elixir-format
 msgid "Cancel"
 msgstr "Abbrechen"
@@ -267,7 +269,7 @@ msgstr "Abbrechen"
 msgid "Choose a member"
 msgstr "Mitglied auswählen"
 
-#: lib/mv_web/live/custom_field_live/form.ex:60
+#: lib/mv_web/live/custom_field_live/form.ex:61
 #, elixir-autogen, elixir-format
 msgid "Description"
 msgstr "Beschreibung"
@@ -287,7 +289,7 @@ msgstr "Aktiviert"
 msgid "ID"
 msgstr "ID"
 
-#: lib/mv_web/live/custom_field_live/form.ex:61
+#: lib/mv_web/live/custom_field_live/form.ex:62
 #, elixir-autogen, elixir-format
 msgid "Immutable"
 msgstr "Unveränderlich"
@@ -315,7 +317,7 @@ msgstr "Mitglied"
 msgid "Members"
 msgstr "Mitglieder"
 
-#: lib/mv_web/live/custom_field_live/form.ex:50
+#: lib/mv_web/live/custom_field_live/form.ex:51
 #, elixir-autogen, elixir-format
 msgid "Name"
 msgstr "Name"
@@ -337,6 +339,7 @@ msgstr "Nicht gesetzt"
 
 #: lib/mv_web/live/user_live/form.ex:107
 #: lib/mv_web/live/user_live/form.ex:115
+#: lib/mv_web/live/user_live/form.ex:210
 #, elixir-autogen, elixir-format
 msgid "Note"
 msgstr "Hinweis"
@@ -357,17 +360,17 @@ msgstr "Passwort-Authentifizierung"
 msgid "Profil"
 msgstr "Profil"
 
-#: lib/mv_web/live/custom_field_live/form.ex:62
+#: lib/mv_web/live/custom_field_live/form.ex:63
 #, elixir-autogen, elixir-format
 msgid "Required"
 msgstr "Erforderlich"
 
-#: lib/mv_web/live/member_live/index.html.heex:34
+#: lib/mv_web/live/member_live/index.html.heex:37
 #, elixir-autogen, elixir-format
 msgid "Select all members"
 msgstr "Alle Mitglieder auswählen"
 
-#: lib/mv_web/live/member_live/index.html.heex:48
+#: lib/mv_web/live/member_live/index.html.heex:51
 #, elixir-autogen, elixir-format
 msgid "Select member"
 msgstr "Mitglied auswählen"
@@ -377,7 +380,7 @@ msgstr "Mitglied auswählen"
 msgid "Settings"
 msgstr "Einstellungen"
 
-#: lib/mv_web/live/user_live/form.ex:125
+#: lib/mv_web/live/user_live/form.ex:235
 #, elixir-autogen, elixir-format
 msgid "Save User"
 msgstr "Benutzer*in speichern"
@@ -402,7 +405,7 @@ msgstr "Nicht unterstützter Wertetyp: %{type}"
 msgid "Use this form to manage user records in your database."
 msgstr "Verwenden Sie dieses Formular, um Benutzer*innen-Datensätze zu verwalten."
 
-#: lib/mv_web/live/user_live/form.ex:142
+#: lib/mv_web/live/user_live/form.ex:252
 #: lib/mv_web/live/user_live/show.ex:34
 #, elixir-autogen, elixir-format
 msgid "User"
@@ -413,7 +416,7 @@ msgstr "Benutzer*in"
 msgid "Value"
 msgstr "Wert"
 
-#: lib/mv_web/live/custom_field_live/form.ex:55
+#: lib/mv_web/live/custom_field_live/form.ex:56
 #, elixir-autogen, elixir-format
 msgid "Value type"
 msgstr "Wertetyp"
@@ -430,7 +433,7 @@ msgstr "aufsteigend"
 msgid "descending"
 msgstr "absteigend"
 
-#: lib/mv_web/live/user_live/form.ex:141
+#: lib/mv_web/live/user_live/form.ex:251
 #, elixir-autogen, elixir-format
 msgid "New"
 msgstr "Neue*r"
@@ -505,6 +508,8 @@ msgstr "Passwort setzen"
 msgid "User will be created without a password. Check 'Set Password' to add one."
 msgstr "Benutzer*in wird ohne Passwort erstellt. Aktivieren Sie 'Passwort setzen', um eines hinzuzufügen."
 
+#: lib/mv_web/live/user_live/form.ex:126
+#: lib/mv_web/live/user_live/index.html.heex:53
 #: lib/mv_web/live/user_live/show.ex:55
 #, elixir-autogen, elixir-format
 msgid "Linked Member"
@@ -515,6 +520,7 @@ msgstr "Verknüpftes Mitglied"
 msgid "Linked User"
 msgstr "Verknüpfte*r Benutzer*in"
 
+#: lib/mv_web/live/user_live/index.html.heex:57
 #: lib/mv_web/live/user_live/show.ex:65
 #, elixir-autogen, elixir-format
 msgid "No member linked"
@@ -566,7 +572,7 @@ msgstr "Benutzer*innen"
 msgid "Click to sort"
 msgstr "Klicke um zu sortieren"
 
-#: lib/mv_web/live/member_live/index.html.heex:60
+#: lib/mv_web/live/member_live/index.html.heex:63
 #, elixir-autogen, elixir-format
 msgid "First name"
 msgstr "Vorname"
@@ -618,7 +624,7 @@ msgstr "Benutzerdefinierte Feldwerte"
 msgid "Custom field"
 msgstr "Benutzerdefiniertes Feld"
 
-#: lib/mv_web/live/custom_field_live/form.ex:115
+#: lib/mv_web/live/custom_field_live/form.ex:117
 #, elixir-autogen, elixir-format
 msgid "Custom field %{action} successfully"
 msgstr "Benutzerdefiniertes Feld erfolgreich %{action}"
@@ -633,7 +639,7 @@ msgstr "Benutzerdefinierter Feldwert erfolgreich %{action}"
 msgid "Please select a custom field first"
 msgstr "Bitte wähle zuerst ein Benutzerdefiniertes Feld"
 
-#: lib/mv_web/live/custom_field_live/form.ex:65
+#: lib/mv_web/live/custom_field_live/form.ex:67
 #, elixir-autogen, elixir-format
 msgid "Save Custom field"
 msgstr "Benutzerdefiniertes Feld speichern"
@@ -643,7 +649,7 @@ msgstr "Benutzerdefiniertes Feld speichern"
 msgid "Save Custom field value"
 msgstr "Benutzerdefinierten Feldwert speichern"
 
-#: lib/mv_web/live/custom_field_live/form.ex:45
+#: lib/mv_web/live/custom_field_live/form.ex:46
 #, elixir-autogen, elixir-format
 msgid "Use this form to manage custom_field records in your database."
 msgstr "Verwende dieses Formular, um Benutzerdefinierte Felder in deiner Datenbank zu verwalten."
@@ -695,6 +701,59 @@ msgstr "Obigen Text zur Bestätigung eingeben"
 msgid "To confirm deletion, please enter this text:"
 msgstr "Um die Löschung zu bestätigen, gib bitte folgenden Text ein:"
 
+#: lib/mv_web/live/user_live/form.ex:210
+#, elixir-autogen, elixir-format
+msgid "A member with this email already exists. To link with a different member, please change one of the email addresses first."
+msgstr "Ein Mitglied mit dieser E-Mail-Adresse existiert bereits. Um mit einem anderen Mitglied zu verknüpfen, ändern Sie bitte zuerst eine der E-Mail-Adressen."
+
+#: lib/mv_web/live/user_live/form.ex:185
+#, elixir-autogen, elixir-format
+msgid "Available members"
+msgstr "Verfügbare Mitglieder"
+
+#: lib/mv_web/live/user_live/form.ex:152
+#, elixir-autogen, elixir-format
+msgid "Member will be unlinked when you save. Cannot select new member until saved."
+msgstr "Mitglied wird beim Speichern entverknüpft. Neues Mitglied kann erst nach dem Speichern ausgewählt werden."
+
+#: lib/mv_web/live/user_live/form.ex:226
+#, elixir-autogen, elixir-format
+msgid "Save to confirm linking."
+msgstr "Speichern, um die Verknüpfung zu bestätigen."
+
+#: lib/mv_web/live/user_live/form.ex:169
+#, elixir-autogen, elixir-format
+msgid "Search for a member to link..."
+msgstr "Nach einem Mitglied zum Verknüpfen suchen..."
+
+#: lib/mv_web/live/user_live/form.ex:173
+#, elixir-autogen, elixir-format
+msgid "Search for member to link"
+msgstr "Nach Mitglied zum Verknüpfen suchen"
+
+#: lib/mv_web/live/user_live/form.ex:223
+#, elixir-autogen, elixir-format
+msgid "Selected"
+msgstr "Ausgewählt"
+
+#: lib/mv_web/live/user_live/form.ex:143
+#, elixir-autogen, elixir-format
+msgid "Unlink Member"
+msgstr "Mitglied entverknüpfen"
+
+#: lib/mv_web/live/user_live/form.ex:152
+#, elixir-autogen, elixir-format
+msgid "Unlinking scheduled"
+msgstr "Entverknüpfung geplant"
+
+#: lib/mv_web/live/user_live/form.ex:342
+#, elixir-autogen, elixir-format
+msgid "Failed to link member: %{error}"
+msgstr ""
+#: lib/mv_web/live/custom_field_live/form.ex:64
+#, elixir-autogen, elixir-format
+msgid "Show in overview"
+msgstr "In der Mitglieder-Übersicht anzeigen"
 #: lib/mv_web/live/global_settings_live.ex:51
 #, elixir-autogen, elixir-format
 msgid "Association Name"

priv/gettext/de/LC_MESSAGES/errors.po

@@ -155,3 +155,7 @@ msgstr "muss mindestens 8 Zeichen lang sein"
 
 msgid "is required"
 msgstr "ist erforderlich"
+
+#: lib/mv_web/live/user_live/form.ex
+msgid "Failed to link member: %{error}"
+msgstr "Fehler beim Verknüpfen des Mitglieds: %{error}"

priv/gettext/default.pot

@@ -11,12 +11,12 @@
 msgid ""
 msgstr ""
 
-#: lib/mv_web/components/core_components.ex:339
+#: lib/mv_web/components/core_components.ex:356
 #, elixir-autogen, elixir-format
 msgid "Actions"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:200
+#: lib/mv_web/live/member_live/index.html.heex:202
 #: lib/mv_web/live/user_live/index.html.heex:65
 #, elixir-autogen, elixir-format
 msgid "Are you sure?"
@@ -29,19 +29,19 @@ msgid "Attempting to reconnect"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:54
-#: lib/mv_web/live/member_live/index.html.heex:145
+#: lib/mv_web/live/member_live/index.html.heex:148
 #: lib/mv_web/live/member_live/show.ex:59
 #, elixir-autogen, elixir-format
 msgid "City"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:202
+#: lib/mv_web/live/member_live/index.html.heex:204
 #: lib/mv_web/live/user_live/index.html.heex:67
 #, elixir-autogen, elixir-format
 msgid "Delete"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:194
+#: lib/mv_web/live/member_live/index.html.heex:196
 #: lib/mv_web/live/user_live/form.ex:141
 #: lib/mv_web/live/user_live/index.html.heex:59
 #, elixir-autogen, elixir-format
@@ -55,7 +55,7 @@ msgid "Edit Member"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:47
-#: lib/mv_web/live/member_live/index.html.heex:77
+#: lib/mv_web/live/member_live/index.html.heex:80
 #: lib/mv_web/live/member_live/show.ex:50
 #: lib/mv_web/live/user_live/form.ex:46
 #: lib/mv_web/live/user_live/index.html.heex:44
@@ -71,7 +71,7 @@ msgid "First Name"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:51
-#: lib/mv_web/live/member_live/index.html.heex:179
+#: lib/mv_web/live/member_live/index.html.heex:182
 #: lib/mv_web/live/member_live/show.ex:56
 #, elixir-autogen, elixir-format
 msgid "Join Date"
@@ -88,7 +88,7 @@ msgstr ""
 msgid "New Member"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:191
+#: lib/mv_web/live/member_live/index.html.heex:193
 #: lib/mv_web/live/user_live/index.html.heex:56
 #, elixir-autogen, elixir-format
 msgid "Show"
@@ -122,7 +122,7 @@ msgid "Exit Date"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:56
-#: lib/mv_web/live/member_live/index.html.heex:111
+#: lib/mv_web/live/member_live/index.html.heex:114
 #: lib/mv_web/live/member_live/show.ex:61
 #, elixir-autogen, elixir-format
 msgid "House Number"
@@ -141,14 +141,14 @@ msgid "Paid"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:50
-#: lib/mv_web/live/member_live/index.html.heex:162
+#: lib/mv_web/live/member_live/index.html.heex:165
 #: lib/mv_web/live/member_live/show.ex:55
 #, elixir-autogen, elixir-format
 msgid "Phone Number"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:57
-#: lib/mv_web/live/member_live/index.html.heex:128
+#: lib/mv_web/live/member_live/index.html.heex:131
 #: lib/mv_web/live/member_live/show.ex:62
 #, elixir-autogen, elixir-format
 msgid "Postal Code"
@@ -159,17 +159,17 @@ msgstr ""
 msgid "Save Member"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:64
+#: lib/mv_web/live/custom_field_live/form.ex:66
 #: lib/mv_web/live/custom_field_value_live/form.ex:74
 #: lib/mv_web/live/global_settings_live.ex:55
 #: lib/mv_web/live/member_live/form.ex:79
-#: lib/mv_web/live/user_live/form.ex:124
+#: lib/mv_web/live/user_live/form.ex:234
 #, elixir-autogen, elixir-format
 msgid "Saving..."
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:55
-#: lib/mv_web/live/member_live/index.html.heex:94
+#: lib/mv_web/live/member_live/index.html.heex:97
 #: lib/mv_web/live/member_live/show.ex:60
 #, elixir-autogen, elixir-format
 msgid "Street"
@@ -185,6 +185,7 @@ msgstr ""
 msgid "Id"
 msgstr ""
 
+#: lib/mv_web/live/member_live/index/formatter.ex:65
 #: lib/mv_web/live/member_live/show.ex:53
 #, elixir-autogen, elixir-format
 msgid "No"
@@ -200,19 +201,20 @@ msgstr ""
 msgid "This is a member record from your database."
 msgstr ""
 
+#: lib/mv_web/live/member_live/index/formatter.ex:64
 #: lib/mv_web/live/member_live/show.ex:53
 #, elixir-autogen, elixir-format
 msgid "Yes"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:108
+#: lib/mv_web/live/custom_field_live/form.ex:110
 #: lib/mv_web/live/custom_field_value_live/form.ex:233
 #: lib/mv_web/live/member_live/form.ex:138
 #, elixir-autogen, elixir-format
 msgid "create"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:109
+#: lib/mv_web/live/custom_field_live/form.ex:111
 #: lib/mv_web/live/custom_field_value_live/form.ex:234
 #: lib/mv_web/live/member_live/form.ex:139
 #, elixir-autogen, elixir-format
@@ -254,11 +256,11 @@ msgstr ""
 msgid "Your password has successfully been reset"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:67
+#: lib/mv_web/live/custom_field_live/form.ex:69
 #: lib/mv_web/live/custom_field_live/index.ex:120
 #: lib/mv_web/live/custom_field_value_live/form.ex:77
 #: lib/mv_web/live/member_live/form.ex:82
-#: lib/mv_web/live/user_live/form.ex:127
+#: lib/mv_web/live/user_live/form.ex:237
 #, elixir-autogen, elixir-format
 msgid "Cancel"
 msgstr ""
@@ -268,7 +270,7 @@ msgstr ""
 msgid "Choose a member"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:60
+#: lib/mv_web/live/custom_field_live/form.ex:61
 #, elixir-autogen, elixir-format
 msgid "Description"
 msgstr ""
@@ -288,7 +290,7 @@ msgstr ""
 msgid "ID"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:61
+#: lib/mv_web/live/custom_field_live/form.ex:62
 #, elixir-autogen, elixir-format
 msgid "Immutable"
 msgstr ""
@@ -316,7 +318,7 @@ msgstr ""
 msgid "Members"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:50
+#: lib/mv_web/live/custom_field_live/form.ex:51
 #, elixir-autogen, elixir-format
 msgid "Name"
 msgstr ""
@@ -338,6 +340,7 @@ msgstr ""
 
 #: lib/mv_web/live/user_live/form.ex:107
 #: lib/mv_web/live/user_live/form.ex:115
+#: lib/mv_web/live/user_live/form.ex:210
 #, elixir-autogen, elixir-format
 msgid "Note"
 msgstr ""
@@ -358,17 +361,17 @@ msgstr ""
 msgid "Profil"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:62
+#: lib/mv_web/live/custom_field_live/form.ex:63
 #, elixir-autogen, elixir-format
 msgid "Required"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:34
+#: lib/mv_web/live/member_live/index.html.heex:37
 #, elixir-autogen, elixir-format
 msgid "Select all members"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:48
+#: lib/mv_web/live/member_live/index.html.heex:51
 #, elixir-autogen, elixir-format
 msgid "Select member"
 msgstr ""
@@ -378,7 +381,7 @@ msgstr ""
 msgid "Settings"
 msgstr ""
 
-#: lib/mv_web/live/user_live/form.ex:125
+#: lib/mv_web/live/user_live/form.ex:235
 #, elixir-autogen, elixir-format
 msgid "Save User"
 msgstr ""
@@ -403,7 +406,7 @@ msgstr ""
 msgid "Use this form to manage user records in your database."
 msgstr ""
 
-#: lib/mv_web/live/user_live/form.ex:142
+#: lib/mv_web/live/user_live/form.ex:252
 #: lib/mv_web/live/user_live/show.ex:34
 #, elixir-autogen, elixir-format
 msgid "User"
@@ -414,7 +417,7 @@ msgstr ""
 msgid "Value"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:55
+#: lib/mv_web/live/custom_field_live/form.ex:56
 #, elixir-autogen, elixir-format
 msgid "Value type"
 msgstr ""
@@ -431,7 +434,7 @@ msgstr ""
 msgid "descending"
 msgstr ""
 
-#: lib/mv_web/live/user_live/form.ex:141
+#: lib/mv_web/live/user_live/form.ex:251
 #, elixir-autogen, elixir-format
 msgid "New"
 msgstr ""
@@ -506,6 +509,8 @@ msgstr ""
 msgid "User will be created without a password. Check 'Set Password' to add one."
 msgstr ""
 
+#: lib/mv_web/live/user_live/form.ex:126
+#: lib/mv_web/live/user_live/index.html.heex:53
 #: lib/mv_web/live/user_live/show.ex:55
 #, elixir-autogen, elixir-format
 msgid "Linked Member"
@@ -516,6 +521,7 @@ msgstr ""
 msgid "Linked User"
 msgstr ""
 
+#: lib/mv_web/live/user_live/index.html.heex:57
 #: lib/mv_web/live/user_live/show.ex:65
 #, elixir-autogen, elixir-format
 msgid "No member linked"
@@ -567,7 +573,7 @@ msgstr ""
 msgid "Click to sort"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:60
+#: lib/mv_web/live/member_live/index.html.heex:63
 #, elixir-autogen, elixir-format
 msgid "First name"
 msgstr ""
@@ -619,7 +625,7 @@ msgstr ""
 msgid "Custom field"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:115
+#: lib/mv_web/live/custom_field_live/form.ex:117
 #, elixir-autogen, elixir-format
 msgid "Custom field %{action} successfully"
 msgstr ""
@@ -634,7 +640,7 @@ msgstr ""
 msgid "Please select a custom field first"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:65
+#: lib/mv_web/live/custom_field_live/form.ex:67
 #, elixir-autogen, elixir-format
 msgid "Save Custom field"
 msgstr ""
@@ -644,7 +650,7 @@ msgstr ""
 msgid "Save Custom field value"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:45
+#: lib/mv_web/live/custom_field_live/form.ex:46
 #, elixir-autogen, elixir-format
 msgid "Use this form to manage custom_field records in your database."
 msgstr ""
@@ -696,6 +702,9 @@ msgstr ""
 msgid "To confirm deletion, please enter this text:"
 msgstr ""
 
+#: lib/mv_web/live/custom_field_live/form.ex:64
+#, elixir-autogen, elixir-format
+msgid "Show in overview"
 #: lib/mv_web/live/global_settings_live.ex:51
 #, elixir-autogen, elixir-format
 msgid "Association Name"

priv/gettext/en/LC_MESSAGES/default.po

@@ -11,12 +11,12 @@ msgstr ""
 "Language: en\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: lib/mv_web/components/core_components.ex:339
+#: lib/mv_web/components/core_components.ex:356
 #, elixir-autogen, elixir-format
 msgid "Actions"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:200
+#: lib/mv_web/live/member_live/index.html.heex:202
 #: lib/mv_web/live/user_live/index.html.heex:65
 #, elixir-autogen, elixir-format
 msgid "Are you sure?"
@@ -29,19 +29,19 @@ msgid "Attempting to reconnect"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:54
-#: lib/mv_web/live/member_live/index.html.heex:145
+#: lib/mv_web/live/member_live/index.html.heex:148
 #: lib/mv_web/live/member_live/show.ex:59
 #, elixir-autogen, elixir-format
 msgid "City"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:202
+#: lib/mv_web/live/member_live/index.html.heex:204
 #: lib/mv_web/live/user_live/index.html.heex:67
 #, elixir-autogen, elixir-format
 msgid "Delete"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:194
+#: lib/mv_web/live/member_live/index.html.heex:196
 #: lib/mv_web/live/user_live/form.ex:141
 #: lib/mv_web/live/user_live/index.html.heex:59
 #, elixir-autogen, elixir-format
@@ -55,7 +55,7 @@ msgid "Edit Member"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:47
-#: lib/mv_web/live/member_live/index.html.heex:77
+#: lib/mv_web/live/member_live/index.html.heex:80
 #: lib/mv_web/live/member_live/show.ex:50
 #: lib/mv_web/live/user_live/form.ex:46
 #: lib/mv_web/live/user_live/index.html.heex:44
@@ -71,7 +71,7 @@ msgid "First Name"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:51
-#: lib/mv_web/live/member_live/index.html.heex:179
+#: lib/mv_web/live/member_live/index.html.heex:182
 #: lib/mv_web/live/member_live/show.ex:56
 #, elixir-autogen, elixir-format
 msgid "Join Date"
@@ -88,7 +88,7 @@ msgstr ""
 msgid "New Member"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:191
+#: lib/mv_web/live/member_live/index.html.heex:193
 #: lib/mv_web/live/user_live/index.html.heex:56
 #, elixir-autogen, elixir-format
 msgid "Show"
@@ -122,7 +122,7 @@ msgid "Exit Date"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:56
-#: lib/mv_web/live/member_live/index.html.heex:111
+#: lib/mv_web/live/member_live/index.html.heex:114
 #: lib/mv_web/live/member_live/show.ex:61
 #, elixir-autogen, elixir-format
 msgid "House Number"
@@ -141,14 +141,14 @@ msgid "Paid"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:50
-#: lib/mv_web/live/member_live/index.html.heex:162
+#: lib/mv_web/live/member_live/index.html.heex:165
 #: lib/mv_web/live/member_live/show.ex:55
 #, elixir-autogen, elixir-format
 msgid "Phone Number"
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:57
-#: lib/mv_web/live/member_live/index.html.heex:128
+#: lib/mv_web/live/member_live/index.html.heex:131
 #: lib/mv_web/live/member_live/show.ex:62
 #, elixir-autogen, elixir-format
 msgid "Postal Code"
@@ -159,17 +159,17 @@ msgstr ""
 msgid "Save Member"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:64
+#: lib/mv_web/live/custom_field_live/form.ex:66
 #: lib/mv_web/live/custom_field_value_live/form.ex:74
 #: lib/mv_web/live/global_settings_live.ex:55
 #: lib/mv_web/live/member_live/form.ex:79
-#: lib/mv_web/live/user_live/form.ex:124
+#: lib/mv_web/live/user_live/form.ex:234
 #, elixir-autogen, elixir-format
 msgid "Saving..."
 msgstr ""
 
 #: lib/mv_web/live/member_live/form.ex:55
-#: lib/mv_web/live/member_live/index.html.heex:94
+#: lib/mv_web/live/member_live/index.html.heex:97
 #: lib/mv_web/live/member_live/show.ex:60
 #, elixir-autogen, elixir-format
 msgid "Street"
@@ -185,6 +185,7 @@ msgstr ""
 msgid "Id"
 msgstr ""
 
+#: lib/mv_web/live/member_live/index/formatter.ex:65
 #: lib/mv_web/live/member_live/show.ex:53
 #, elixir-autogen, elixir-format
 msgid "No"
@@ -200,19 +201,20 @@ msgstr ""
 msgid "This is a member record from your database."
 msgstr ""
 
+#: lib/mv_web/live/member_live/index/formatter.ex:64
 #: lib/mv_web/live/member_live/show.ex:53
 #, elixir-autogen, elixir-format
 msgid "Yes"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:108
+#: lib/mv_web/live/custom_field_live/form.ex:110
 #: lib/mv_web/live/custom_field_value_live/form.ex:233
 #: lib/mv_web/live/member_live/form.ex:138
 #, elixir-autogen, elixir-format
 msgid "create"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:109
+#: lib/mv_web/live/custom_field_live/form.ex:111
 #: lib/mv_web/live/custom_field_value_live/form.ex:234
 #: lib/mv_web/live/member_live/form.ex:139
 #, elixir-autogen, elixir-format
@@ -254,11 +256,11 @@ msgstr ""
 msgid "Your password has successfully been reset"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:67
+#: lib/mv_web/live/custom_field_live/form.ex:69
 #: lib/mv_web/live/custom_field_live/index.ex:120
 #: lib/mv_web/live/custom_field_value_live/form.ex:77
 #: lib/mv_web/live/member_live/form.ex:82
-#: lib/mv_web/live/user_live/form.ex:127
+#: lib/mv_web/live/user_live/form.ex:237
 #, elixir-autogen, elixir-format
 msgid "Cancel"
 msgstr ""
@@ -268,7 +270,7 @@ msgstr ""
 msgid "Choose a member"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:60
+#: lib/mv_web/live/custom_field_live/form.ex:61
 #, elixir-autogen, elixir-format
 msgid "Description"
 msgstr ""
@@ -288,7 +290,7 @@ msgstr ""
 msgid "ID"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:61
+#: lib/mv_web/live/custom_field_live/form.ex:62
 #, elixir-autogen, elixir-format
 msgid "Immutable"
 msgstr ""
@@ -316,7 +318,7 @@ msgstr ""
 msgid "Members"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:50
+#: lib/mv_web/live/custom_field_live/form.ex:51
 #, elixir-autogen, elixir-format
 msgid "Name"
 msgstr ""
@@ -338,6 +340,7 @@ msgstr ""
 
 #: lib/mv_web/live/user_live/form.ex:107
 #: lib/mv_web/live/user_live/form.ex:115
+#: lib/mv_web/live/user_live/form.ex:210
 #, elixir-autogen, elixir-format, fuzzy
 msgid "Note"
 msgstr ""
@@ -358,17 +361,17 @@ msgstr ""
 msgid "Profil"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:62
+#: lib/mv_web/live/custom_field_live/form.ex:63
 #, elixir-autogen, elixir-format
 msgid "Required"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:34
+#: lib/mv_web/live/member_live/index.html.heex:37
 #, elixir-autogen, elixir-format
 msgid "Select all members"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:48
+#: lib/mv_web/live/member_live/index.html.heex:51
 #, elixir-autogen, elixir-format
 msgid "Select member"
 msgstr ""
@@ -378,7 +381,7 @@ msgstr ""
 msgid "Settings"
 msgstr ""
 
-#: lib/mv_web/live/user_live/form.ex:125
+#: lib/mv_web/live/user_live/form.ex:235
 #, elixir-autogen, elixir-format, fuzzy
 msgid "Save User"
 msgstr ""
@@ -403,7 +406,7 @@ msgstr ""
 msgid "Use this form to manage user records in your database."
 msgstr ""
 
-#: lib/mv_web/live/user_live/form.ex:142
+#: lib/mv_web/live/user_live/form.ex:252
 #: lib/mv_web/live/user_live/show.ex:34
 #, elixir-autogen, elixir-format
 msgid "User"
@@ -414,7 +417,7 @@ msgstr ""
 msgid "Value"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:55
+#: lib/mv_web/live/custom_field_live/form.ex:56
 #, elixir-autogen, elixir-format
 msgid "Value type"
 msgstr ""
@@ -431,7 +434,7 @@ msgstr ""
 msgid "descending"
 msgstr ""
 
-#: lib/mv_web/live/user_live/form.ex:141
+#: lib/mv_web/live/user_live/form.ex:251
 #, elixir-autogen, elixir-format
 msgid "New"
 msgstr ""
@@ -506,6 +509,8 @@ msgstr "Set Password"
 msgid "User will be created without a password. Check 'Set Password' to add one."
 msgstr "User will be created without a password. Check 'Set Password' to add one."
 
+#: lib/mv_web/live/user_live/form.ex:126
+#: lib/mv_web/live/user_live/index.html.heex:53
 #: lib/mv_web/live/user_live/show.ex:55
 #, elixir-autogen, elixir-format, fuzzy
 msgid "Linked Member"
@@ -516,6 +521,7 @@ msgstr ""
 msgid "Linked User"
 msgstr ""
 
+#: lib/mv_web/live/user_live/index.html.heex:57
 #: lib/mv_web/live/user_live/show.ex:65
 #, elixir-autogen, elixir-format
 msgid "No member linked"
@@ -567,7 +573,7 @@ msgstr ""
 msgid "Click to sort"
 msgstr ""
 
-#: lib/mv_web/live/member_live/index.html.heex:60
+#: lib/mv_web/live/member_live/index.html.heex:63
 #, elixir-autogen, elixir-format, fuzzy
 msgid "First name"
 msgstr ""
@@ -619,7 +625,7 @@ msgstr ""
 msgid "Custom field"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:115
+#: lib/mv_web/live/custom_field_live/form.ex:117
 #, elixir-autogen, elixir-format
 msgid "Custom field %{action} successfully"
 msgstr ""
@@ -634,7 +640,7 @@ msgstr ""
 msgid "Please select a custom field first"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:65
+#: lib/mv_web/live/custom_field_live/form.ex:67
 #, elixir-autogen, elixir-format
 msgid "Save Custom field"
 msgstr ""
@@ -644,7 +650,7 @@ msgstr ""
 msgid "Save Custom field value"
 msgstr ""
 
-#: lib/mv_web/live/custom_field_live/form.ex:45
+#: lib/mv_web/live/custom_field_live/form.ex:46
 #, elixir-autogen, elixir-format, fuzzy
 msgid "Use this form to manage custom_field records in your database."
 msgstr ""
@@ -696,6 +702,58 @@ msgstr ""
 msgid "To confirm deletion, please enter this text:"
 msgstr ""
 
+#: lib/mv_web/live/user_live/form.ex:210
+#, elixir-autogen, elixir-format
+msgid "A member with this email already exists. To link with a different member, please change one of the email addresses first."
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:185
+#, elixir-autogen, elixir-format
+msgid "Available members"
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:152
+#, elixir-autogen, elixir-format
+msgid "Member will be unlinked when you save. Cannot select new member until saved."
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:226
+#, elixir-autogen, elixir-format
+msgid "Save to confirm linking."
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:169
+#, elixir-autogen, elixir-format
+msgid "Search for a member to link..."
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:173
+#, elixir-autogen, elixir-format
+msgid "Search for member to link"
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:223
+#, elixir-autogen, elixir-format, fuzzy
+msgid "Selected"
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:143
+#, elixir-autogen, elixir-format
+msgid "Unlink Member"
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:152
+#, elixir-autogen, elixir-format
+msgid "Unlinking scheduled"
+msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex:342
+#, elixir-autogen, elixir-format
+msgid "Failed to link member: %{error}"
+msgstr ""
+#: lib/mv_web/live/custom_field_live/form.ex:64
+#, elixir-autogen, elixir-format
+msgid "Show in overview"
 #: lib/mv_web/live/global_settings_live.ex:51
 #, elixir-autogen, elixir-format
 msgid "Association Name"

priv/gettext/en/LC_MESSAGES/errors.po

@@ -155,3 +155,7 @@ msgstr ""
 
 msgid "is required"
 msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex
+msgid "Failed to link member: %{error}"
+msgstr ""

priv/gettext/errors.pot

@@ -152,3 +152,7 @@ msgstr ""
 
 msgid "is required"
 msgstr ""
+
+#: lib/mv_web/live/user_live/form.ex
+msgid "Failed to link member: %{error}"
+msgstr ""

priv/repo/migrations/20251119160509_add_show_in_overview_to_custom_fields.exs

@@ -0,0 +1,21 @@
+defmodule Mv.Repo.Migrations.AddShowInOverviewToCustomFields do
+  @moduledoc """
+  Updates resources based on their most recent snapshots.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`
+  """
+
+  use Ecto.Migration
+
+  def up do
+    alter table(:custom_fields) do
+      add :show_in_overview, :boolean, null: false, default: true
+    end
+  end
+
+  def down do
+    alter table(:custom_fields) do
+      remove :show_in_overview
+    end
+  end
+end

priv/resource_snapshots/repo/custom_fields/20251119160509.json

@@ -0,0 +1,118 @@
+{
+  "attributes": [
+    {
+      "allow_nil?": false,
+      "default": "fragment(\"gen_random_uuid()\")",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": true,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "id",
+      "type": "uuid"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "name",
+      "type": "text"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "value_type",
+      "type": "text"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "description",
+      "type": "text"
+    },
+    {
+      "allow_nil?": false,
+      "default": "false",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "immutable",
+      "type": "boolean"
+    },
+    {
+      "allow_nil?": false,
+      "default": "false",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "required",
+      "type": "boolean"
+    },
+    {
+      "allow_nil?": false,
+      "default": "false",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "show_in_overview",
+      "type": "boolean"
+    }
+  ],
+  "base_filter": null,
+  "check_constraints": [],
+  "custom_indexes": [],
+  "custom_statements": [],
+  "has_create_action": true,
+  "hash": "9FBFC42DA896058F88DEDAE774614919222BF2EF2F8CB27386D02C2CE67F03DE",
+  "identities": [
+    {
+      "all_tenants?": false,
+      "base_filter": null,
+      "index_name": "custom_fields_unique_name_index",
+      "keys": [
+        {
+          "type": "atom",
+          "value": "name"
+        }
+      ],
+      "name": "unique_name",
+      "nils_distinct?": true,
+      "where": null
+    }
+  ],
+  "multitenancy": {
+    "attribute": null,
+    "global": null,
+    "strategy": null
+  },
+  "repo": "Elixir.Mv.Repo",
+  "schema": null,
+  "table": "custom_fields"
+}

test/accounts/user_member_linking_email_test.exs

@@ -0,0 +1,169 @@
+defmodule Mv.Accounts.UserMemberLinkingEmailTest do
+  @moduledoc """
+  Tests email validation during user-member linking.
+  Implements rules from docs/email-sync.md.
+  Tests for Issue #168, specifically Problem #4: Email validation bug.
+  """
+
+  use Mv.DataCase, async: false
+
+  alias Mv.Accounts
+  alias Mv.Membership
+
+  describe "link with same email" do
+    test "succeeds when user.email == member.email" do
+      # Create member with specific email
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Alice",
+          last_name: "Johnson",
+          email: "alice@example.com"
+        })
+
+      # Create user with same email and link to member
+      result =
+        Accounts.create_user(%{
+          email: "alice@example.com",
+          member: %{id: member.id}
+        })
+
+      # Should succeed without errors
+      assert {:ok, user} = result
+      assert to_string(user.email) == "alice@example.com"
+
+      # Reload to verify link
+      user = Ash.load!(user, [:member], domain: Mv.Accounts)
+      assert user.member.id == member.id
+      assert user.member.email == "alice@example.com"
+    end
+
+    test "no validation error triggered when updating linked pair with same email" do
+      # Create member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Bob",
+          last_name: "Smith",
+          email: "bob@example.com"
+        })
+
+      # Create user and link
+      {:ok, user} =
+        Accounts.create_user(%{
+          email: "bob@example.com",
+          member: %{id: member.id}
+        })
+
+      # Update user (should not trigger email validation error)
+      result = Accounts.update_user(user, %{email: "bob@example.com"})
+
+      assert {:ok, updated_user} = result
+      assert to_string(updated_user.email) == "bob@example.com"
+    end
+  end
+
+  describe "link with different emails" do
+    test "fails if member.email is used by a DIFFERENT linked user" do
+      # Create first user and link to a different member
+      {:ok, other_member} =
+        Membership.create_member(%{
+          first_name: "Other",
+          last_name: "Member",
+          email: "other@example.com"
+        })
+
+      {:ok, _user1} =
+        Accounts.create_user(%{
+          email: "user1@example.com",
+          member: %{id: other_member.id}
+        })
+
+      # Reload to ensure email sync happened
+      _other_member = Ash.reload!(other_member)
+
+      # Create a NEW member with different email
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Charlie",
+          last_name: "Brown",
+          email: "charlie@example.com"
+        })
+
+      # Try to create user2 with email that matches the linked other_member
+      result =
+        Accounts.create_user(%{
+          email: "user1@example.com",
+          member: %{id: member.id}
+        })
+
+      # Should fail because user1@example.com is already used by other_member (which is linked to user1)
+      assert {:error, _error} = result
+    end
+
+    test "succeeds for unique emails" do
+      # Create member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "David",
+          last_name: "Wilson",
+          email: "david@example.com"
+        })
+
+      # Create user with different but unique email
+      result =
+        Accounts.create_user(%{
+          email: "user@example.com",
+          member: %{id: member.id}
+        })
+
+      # Should succeed
+      assert {:ok, user} = result
+
+      # Email sync should update member's email to match user's
+      user = Ash.load!(user, [:member], domain: Mv.Accounts)
+      assert user.member.email == "user@example.com"
+    end
+  end
+
+  describe "edge cases" do
+    test "unlinking and relinking with same email works (Problem #4)" do
+      # This is the exact scenario from Problem #4:
+      # 1. Link user and member (both have same email)
+      # 2. Unlink them (member keeps the email)
+      # 3. Try to relink (validation should NOT fail)
+
+      # Create member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Emma",
+          last_name: "Davis",
+          email: "emma@example.com"
+        })
+
+      # Create user and link
+      {:ok, user} =
+        Accounts.create_user(%{
+          email: "emma@example.com",
+          member: %{id: member.id}
+        })
+
+      # Verify they are linked
+      user = Ash.load!(user, [:member], domain: Mv.Accounts)
+      assert user.member.id == member.id
+      assert user.member.email == "emma@example.com"
+
+      # Unlink
+      {:ok, unlinked_user} = Accounts.update_user(user, %{member: nil})
+      assert is_nil(unlinked_user.member_id)
+
+      # Member still has the email after unlink
+      member = Ash.reload!(member)
+      assert member.email == "emma@example.com"
+
+      # Relink (should work - this is Problem #4)
+      result = Accounts.update_user(unlinked_user, %{member: %{id: member.id}})
+
+      assert {:ok, relinked_user} = result
+      assert relinked_user.member_id == member.id
+    end
+  end
+end

test/accounts/user_member_linking_test.exs

@@ -0,0 +1,130 @@
+defmodule Mv.Accounts.UserMemberLinkingTest do
+  @moduledoc """
+  Integration tests for User-Member linking functionality.
+
+  Tests the complete workflow of linking and unlinking members to users,
+  including email synchronization and validation rules.
+  """
+  use Mv.DataCase, async: false
+  alias Mv.Accounts
+  alias Mv.Membership
+
+  describe "User-Member Linking with Email Sync" do
+    test "link user to member with different email syncs member email" do
+      # Create user with one email
+      {:ok, user} = Accounts.create_user(%{email: "user@example.com"})
+
+      # Create member with different email
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "John",
+          last_name: "Doe",
+          email: "member@example.com"
+        })
+
+      # Link user to member
+      {:ok, updated_user} = Accounts.update_user(user, %{member: %{id: member.id}})
+
+      # Verify link exists
+      user_with_member = Ash.get!(Mv.Accounts.User, updated_user.id, load: [:member])
+      assert user_with_member.member.id == member.id
+
+      # Verify member email was synced to match user email
+      synced_member = Ash.get!(Mv.Membership.Member, member.id)
+      assert synced_member.email == "user@example.com"
+    end
+
+    test "unlink member from user sets member to nil" do
+      # Create and link user and member
+      {:ok, user} = Accounts.create_user(%{email: "user@example.com"})
+
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Jane",
+          last_name: "Smith",
+          email: "jane@example.com"
+        })
+
+      {:ok, linked_user} = Accounts.update_user(user, %{member: %{id: member.id}})
+
+      # Verify link exists
+      user_with_member = Ash.get!(Mv.Accounts.User, linked_user.id, load: [:member])
+      assert user_with_member.member.id == member.id
+
+      # Unlink by setting member to nil
+      {:ok, unlinked_user} = Accounts.update_user(linked_user, %{member: nil})
+
+      # Verify link is removed
+      user_without_member = Ash.get!(Mv.Accounts.User, unlinked_user.id, load: [:member])
+      assert is_nil(user_without_member.member)
+
+      # Verify member still exists independently
+      member_still_exists = Ash.get!(Mv.Membership.Member, member.id)
+      assert member_still_exists.id == member.id
+    end
+
+    test "cannot link member already linked to another user" do
+      # Create first user and link to member
+      {:ok, user1} = Accounts.create_user(%{email: "user1@example.com"})
+
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Bob",
+          last_name: "Wilson",
+          email: "bob@example.com"
+        })
+
+      {:ok, _linked_user1} = Accounts.update_user(user1, %{member: %{id: member.id}})
+
+      # Create second user and try to link to same member
+      {:ok, user2} = Accounts.create_user(%{email: "user2@example.com"})
+
+      # Should fail because member is already linked
+      assert {:error, %Ash.Error.Invalid{}} =
+               Accounts.update_user(user2, %{member: %{id: member.id}})
+    end
+
+    test "cannot change member link directly, must unlink first" do
+      # Create user and link to first member
+      {:ok, user} = Accounts.create_user(%{email: "user@example.com"})
+
+      {:ok, member1} =
+        Membership.create_member(%{
+          first_name: "Alice",
+          last_name: "Johnson",
+          email: "alice@example.com"
+        })
+
+      {:ok, linked_user} = Accounts.update_user(user, %{member: %{id: member1.id}})
+
+      # Create second member
+      {:ok, member2} =
+        Membership.create_member(%{
+          first_name: "Charlie",
+          last_name: "Brown",
+          email: "charlie@example.com"
+        })
+
+      # Try to directly change member link (should fail)
+      assert {:error, %Ash.Error.Invalid{errors: errors}} =
+               Accounts.update_user(linked_user, %{member: %{id: member2.id}})
+
+      # Verify error message mentions "Remove existing member first"
+      error_messages = Enum.map(errors, & &1.message)
+      assert Enum.any?(error_messages, &String.contains?(&1, "Remove existing member first"))
+
+      # Two-step process: first unlink, then link new member
+      {:ok, unlinked_user} = Accounts.update_user(linked_user, %{member: nil})
+
+      # After unlinking, member1 still has the user's email
+      # Change member1's email to avoid conflict when relinking to member2
+      {:ok, _} = Membership.update_member(member1, %{email: "alice_changed@example.com"})
+
+      {:ok, relinked_user} = Accounts.update_user(unlinked_user, %{member: %{id: member2.id}})
+
+      # Verify new link is established
+      user_with_new_member = Ash.get!(Mv.Accounts.User, relinked_user.id, load: [:member])
+      assert user_with_new_member.member.id == member2.id
+    end
+  end
+end

test/membership/custom_field_show_in_overview_test.exs

@@ -0,0 +1,77 @@
+defmodule Mv.Membership.CustomFieldShowInOverviewTest do
+  @moduledoc """
+  Tests for CustomField show_in_overview attribute.
+
+  Tests cover:
+  - Creating custom fields with show_in_overview: true
+  - Creating custom fields with show_in_overview: false (default)
+  - Updating show_in_overview to true
+  - Updating show_in_overview to false
+  """
+  use Mv.DataCase, async: true
+
+  alias Mv.Membership.CustomField
+
+  describe "show_in_overview attribute" do
+    test "creates custom field with show_in_overview: true" do
+      assert {:ok, custom_field} =
+               CustomField
+               |> Ash.Changeset.for_create(:create, %{
+                 name: "test_field_show",
+                 value_type: :string,
+                 show_in_overview: true
+               })
+               |> Ash.create()
+
+      assert custom_field.show_in_overview == true
+    end
+
+    test "creates custom field with show_in_overview: true (default)" do
+      assert {:ok, custom_field} =
+               CustomField
+               |> Ash.Changeset.for_create(:create, %{
+                 name: "test_field_hide",
+                 value_type: :string
+               })
+               |> Ash.create()
+
+      assert custom_field.show_in_overview == true
+    end
+
+    test "updates show_in_overview to true" do
+      {:ok, custom_field} =
+        CustomField
+        |> Ash.Changeset.for_create(:create, %{
+          name: "test_field_update",
+          value_type: :string,
+          show_in_overview: false
+        })
+        |> Ash.create()
+
+      assert {:ok, updated_field} =
+               custom_field
+               |> Ash.Changeset.for_update(:update, %{show_in_overview: true})
+               |> Ash.update()
+
+      assert updated_field.show_in_overview == true
+    end
+
+    test "updates show_in_overview to false" do
+      {:ok, custom_field} =
+        CustomField
+        |> Ash.Changeset.for_create(:create, %{
+          name: "test_field_update2",
+          value_type: :string,
+          show_in_overview: true
+        })
+        |> Ash.create()
+
+      assert {:ok, updated_field} =
+               custom_field
+               |> Ash.Changeset.for_update(:update, %{show_in_overview: false})
+               |> Ash.update()
+
+      assert updated_field.show_in_overview == false
+    end
+  end
+end

test/membership/member_available_for_linking_test.exs

@@ -0,0 +1,222 @@
+defmodule Mv.Membership.MemberAvailableForLinkingTest do
+  @moduledoc """
+  Tests for the Member.available_for_linking action.
+
+  This action returns members that can be linked to a user account:
+  - Only members without existing user links (user_id == nil)
+  - Limited to 10 results
+  - Special email-match logic: if user_email matches member email, only return that member
+  - Optional search query filtering by name and email
+  """
+  use Mv.DataCase, async: false
+  alias Mv.Membership
+
+  describe "available_for_linking/2" do
+    setup do
+      # Create 5 unlinked members with distinct names
+      {:ok, member1} =
+        Membership.create_member(%{
+          first_name: "Alice",
+          last_name: "Anderson",
+          email: "alice@example.com"
+        })
+
+      {:ok, member2} =
+        Membership.create_member(%{
+          first_name: "Bob",
+          last_name: "Williams",
+          email: "bob@example.com"
+        })
+
+      {:ok, member3} =
+        Membership.create_member(%{
+          first_name: "Charlie",
+          last_name: "Davis",
+          email: "charlie@example.com"
+        })
+
+      {:ok, member4} =
+        Membership.create_member(%{
+          first_name: "Diana",
+          last_name: "Martinez",
+          email: "diana@example.com"
+        })
+
+      {:ok, member5} =
+        Membership.create_member(%{
+          first_name: "Emma",
+          last_name: "Taylor",
+          email: "emma@example.com"
+        })
+
+      unlinked_members = [member1, member2, member3, member4, member5]
+
+      # Create 2 linked members (with users)
+      {:ok, user1} = Mv.Accounts.create_user(%{email: "user1@example.com"})
+
+      {:ok, linked_member1} =
+        Membership.create_member(%{
+          first_name: "Linked",
+          last_name: "Member1",
+          email: "linked1@example.com",
+          user: %{id: user1.id}
+        })
+
+      {:ok, user2} = Mv.Accounts.create_user(%{email: "user2@example.com"})
+
+      {:ok, linked_member2} =
+        Membership.create_member(%{
+          first_name: "Linked",
+          last_name: "Member2",
+          email: "linked2@example.com",
+          user: %{id: user2.id}
+        })
+
+      %{
+        unlinked_members: unlinked_members,
+        linked_members: [linked_member1, linked_member2]
+      }
+    end
+
+    test "returns only unlinked members and limits to 10", %{
+      unlinked_members: unlinked_members,
+      linked_members: _linked_members
+    } do
+      # Call the action without any arguments
+      members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{})
+        |> Ash.read!()
+
+      # Should return only the 5 unlinked members, not the 2 linked ones
+      assert length(members) == 5
+
+      returned_ids = Enum.map(members, & &1.id) |> MapSet.new()
+      expected_ids = Enum.map(unlinked_members, & &1.id) |> MapSet.new()
+
+      assert MapSet.equal?(returned_ids, expected_ids)
+
+      # Verify none of the returned members have a user_id
+      Enum.each(members, fn member ->
+        member_with_user = Ash.get!(Mv.Membership.Member, member.id, load: [:user])
+        assert is_nil(member_with_user.user)
+      end)
+    end
+
+    test "limits results to 10 members even when more exist" do
+      # Create 15 additional unlinked members (total 20 unlinked)
+      for i <- 6..20 do
+        Membership.create_member(%{
+          first_name: "Extra#{i}",
+          last_name: "Member#{i}",
+          email: "extra#{i}@example.com"
+        })
+      end
+
+      members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{})
+        |> Ash.read!()
+
+      # Should be limited to 10
+      assert length(members) == 10
+    end
+
+    test "email match: returns only member with matching email when exists", %{
+      unlinked_members: unlinked_members
+    } do
+      # Get one of the unlinked members' email
+      target_member = List.first(unlinked_members)
+      user_email = target_member.email
+
+      raw_members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{user_email: user_email})
+        |> Ash.read!()
+
+      # Apply email match filtering (sorted results come from query)
+      # When user_email matches, only that member should be returned
+      members = Mv.Membership.Member.filter_by_email_match(raw_members, user_email)
+
+      # Should return only the member with matching email
+      assert length(members) == 1
+      assert List.first(members).id == target_member.id
+      assert List.first(members).email == user_email
+    end
+
+    test "email match: returns all unlinked members when no email match" do
+      # Use an email that doesn't match any member
+      non_matching_email = "nonexistent@example.com"
+
+      raw_members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{user_email: non_matching_email})
+        |> Ash.read!()
+
+      # Apply email match filtering
+      members = Mv.Membership.Member.filter_by_email_match(raw_members, non_matching_email)
+
+      # Should return all 5 unlinked members since no match
+      assert length(members) == 5
+    end
+
+    test "search query: filters by first_name, last_name, and email", %{
+      unlinked_members: _unlinked_members
+    } do
+      # Search by first name
+      members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{search_query: "Alice"})
+        |> Ash.read!()
+
+      assert length(members) == 1
+      assert List.first(members).first_name == "Alice"
+
+      # Search by last name
+      members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{search_query: "Williams"})
+        |> Ash.read!()
+
+      assert length(members) == 1
+      assert List.first(members).last_name == "Williams"
+
+      # Search by email
+      members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{search_query: "charlie@"})
+        |> Ash.read!()
+
+      assert length(members) == 1
+      assert List.first(members).email == "charlie@example.com"
+
+      # Search returns empty when no matches
+      members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{search_query: "NonExistent"})
+        |> Ash.read!()
+
+      assert Enum.empty?(members)
+    end
+
+    test "user_email takes precedence over search_query", %{unlinked_members: unlinked_members} do
+      target_member = List.first(unlinked_members)
+
+      # Pass both email match and search query that would match different members
+      raw_members =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: target_member.email,
+          search_query: "Bob"
+        })
+        |> Ash.read!()
+
+      # Apply email-match filter (as LiveView does)
+      members = Mv.Membership.Member.filter_by_email_match(raw_members, target_member.email)
+
+      # Email takes precedence: should match target_member by email, ignoring search_query
+      assert length(members) == 1
+      assert List.first(members).id == target_member.id
+    end
+  end
+end

test/membership/member_fuzzy_search_linking_test.exs

@@ -0,0 +1,158 @@
+defmodule Mv.Membership.MemberFuzzySearchLinkingTest do
+  @moduledoc """
+  Tests fuzzy search in Member.available_for_linking action.
+  Verifies PostgreSQL trigram matching for member search.
+  """
+
+  use Mv.DataCase, async: false
+
+  alias Mv.Accounts
+  alias Mv.Membership
+
+  describe "available_for_linking with fuzzy search" do
+    test "finds member despite typo" do
+      # Create member with specific name
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Jonathan",
+          last_name: "Smith",
+          email: "jonathan@example.com"
+        })
+
+      # Search with typo
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Jonatan"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should find Jonathan despite typo
+      assert length(members) == 1
+      assert hd(members).id == member.id
+    end
+
+    test "finds member with partial match" do
+      # Create member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Alexander",
+          last_name: "Williams",
+          email: "alex@example.com"
+        })
+
+      # Search with partial
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Alex"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should find Alexander
+      assert length(members) == 1
+      assert hd(members).id == member.id
+    end
+
+    test "email match overrides fuzzy search" do
+      # Create two members
+      {:ok, member1} =
+        Membership.create_member(%{
+          first_name: "John",
+          last_name: "Doe",
+          email: "john@example.com"
+        })
+
+      {:ok, _member2} =
+        Membership.create_member(%{
+          first_name: "Jane",
+          last_name: "Smith",
+          email: "jane@example.com"
+        })
+
+      # Search with user_email that matches member1, but search_query that would match member2
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: "john@example.com",
+          search_query: "Jane"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Apply email filter
+      filtered_members = Mv.Membership.Member.filter_by_email_match(members, "john@example.com")
+
+      # Should only return member1 (email match takes precedence)
+      assert length(filtered_members) == 1
+      assert hd(filtered_members).id == member1.id
+    end
+
+    test "limits to 10 results" do
+      # Create 15 members with similar names
+      for i <- 1..15 do
+        Membership.create_member(%{
+          first_name: "Test#{i}",
+          last_name: "Member",
+          email: "test#{i}@example.com"
+        })
+      end
+
+      # Search for "Test"
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Test"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should return max 10 members
+      assert length(members) == 10
+    end
+
+    test "excludes linked members" do
+      # Create member and link to user
+      {:ok, member1} =
+        Membership.create_member(%{
+          first_name: "Linked",
+          last_name: "Member",
+          email: "linked@example.com"
+        })
+
+      {:ok, _user} =
+        Accounts.create_user(%{
+          email: "user@example.com",
+          member: %{id: member1.id}
+        })
+
+      # Create unlinked member
+      {:ok, member2} =
+        Membership.create_member(%{
+          first_name: "Unlinked",
+          last_name: "Member",
+          email: "unlinked@example.com"
+        })
+
+      # Search for "Member"
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Member"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should only return unlinked member
+      member_ids = Enum.map(members, & &1.id)
+      refute member1.id in member_ids
+      assert member2.id in member_ids
+    end
+  end
+end

test/mv_web/member_live/index_custom_fields_accessibility_test.exs

@@ -0,0 +1,113 @@
+defmodule MvWeb.MemberLive.IndexCustomFieldsAccessibilityTest do
+  @moduledoc """
+  Accessibility tests for custom field columns in the member overview.
+
+  Tests cover:
+  - SortHeaderComponent for custom fields has correct ARIA labels
+  - Tab navigation works for custom field columns
+  - Screen reader announcements for sorting
+  """
+  use MvWeb.ConnCase, async: true
+  import Phoenix.LiveViewTest
+  require Ash.Query
+
+  alias Mv.Membership.{CustomField, CustomFieldValue, Member}
+
+  setup do
+    # Create test member
+    {:ok, member} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Alice",
+        last_name: "Anderson",
+        email: "alice@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom field with show_in_overview: true
+    {:ok, field} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "membership_number",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create custom field value
+    {:ok, _cfv} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => "A001"}
+      })
+      |> Ash.create()
+
+    %{member: member, field: field}
+  end
+
+  test "sort header component for custom fields has correct ARIA labels", %{
+    conn: conn,
+    field: field
+  } do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that the sort button has aria-label
+    assert html =~ ~r/aria-label=["']Click to sort["']/i or
+             html =~ ~r/aria-label=["'].*sort.*["']/i
+
+    # Check that data-testid is present for testing
+    assert html =~ ~r/data-testid=["']custom_field_#{field.id}["']/
+  end
+
+  test "sort header component shows correct ARIA label when sorted ascending", %{
+    conn: conn,
+    field: field
+  } do
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=asc")
+
+    html = render(view)
+
+    # Check that aria-label indicates ascending sort
+    assert html =~ ~r/aria-label=["'].*ascending.*["']/i
+  end
+
+  test "sort header component shows correct ARIA label when sorted descending", %{
+    conn: conn,
+    field: field
+  } do
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=desc")
+
+    html = render(view)
+
+    # Check that aria-label indicates descending sort
+    assert html =~ ~r/aria-label=["'].*descending.*["']/i
+  end
+
+  test "custom field column header is keyboard accessible", %{conn: conn, field: field} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that the sort button is a button element (keyboard accessible)
+    assert html =~ ~r/<button[^>]*data-testid=["']custom_field_#{field.id}["']/
+
+    # Button should not have tabindex="-1" (which would remove from tab order)
+    refute html =~ ~r/tabindex=["']-1["']/
+  end
+
+  test "custom field column header has proper semantic structure", %{conn: conn, field: field} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that custom field name is displayed in the header
+    assert html =~ field.name
+  end
+end

test/mv_web/member_live/index_custom_fields_display_test.exs

@@ -0,0 +1,262 @@
+defmodule MvWeb.MemberLive.IndexCustomFieldsDisplayTest do
+  @moduledoc """
+  Tests for displaying custom fields in the member overview.
+
+  Tests cover:
+  - Custom fields with show_in_overview: true are displayed
+  - Custom fields with show_in_overview: false are not displayed
+  - Multiple custom fields with show_in_overview: true are all displayed
+  - Custom field values are correctly formatted for different types
+  - Members without custom field values show empty cell or "-"
+  """
+  use MvWeb.ConnCase, async: true
+  import Phoenix.LiveViewTest
+  require Ash.Query
+
+  alias Mv.Membership.{CustomField, CustomFieldValue, Member}
+
+  setup do
+    # Create test members
+    {:ok, member1} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Alice",
+        last_name: "Anderson",
+        email: "alice@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member2} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Bob",
+        last_name: "Brown",
+        email: "bob@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom fields
+    {:ok, field_show_string} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "phone_mobile",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field_hide} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "internal_note",
+        value_type: :string,
+        show_in_overview: false
+      })
+      |> Ash.create()
+
+    {:ok, field_show_integer} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "membership_number",
+        value_type: :integer,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field_show_boolean} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "newsletter",
+        value_type: :boolean,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field_show_date} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "birthday",
+        value_type: :date,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field_show_email} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "secondary_email",
+        value_type: :email,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create custom field values for member1
+    {:ok, _cfv1} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_show_string.id,
+        value: %{"_union_type" => "string", "_union_value" => "+49123456789"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv2} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_show_integer.id,
+        value: %{"_union_type" => "integer", "_union_value" => 12_345}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv3} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_show_boolean.id,
+        value: %{"_union_type" => "boolean", "_union_value" => true}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv4} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_show_date.id,
+        value: %{"_union_type" => "date", "_union_value" => ~D[1990-05-15]}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv5} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_show_email.id,
+        value: %{"_union_type" => "email", "_union_value" => "alice.private@example.com"}
+      })
+      |> Ash.create()
+
+    # Create hidden custom field value (should not be displayed)
+    {:ok, _cfv_hidden} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_hide.id,
+        value: %{"_union_type" => "string", "_union_value" => "Internal note"}
+      })
+      |> Ash.create()
+
+    %{
+      member1: member1,
+      member2: member2,
+      field_show_string: field_show_string,
+      field_hide: field_hide,
+      field_show_integer: field_show_integer,
+      field_show_boolean: field_show_boolean,
+      field_show_date: field_show_date,
+      field_show_email: field_show_email
+    }
+  end
+
+  test "displays custom field with show_in_overview: true", %{
+    conn: conn,
+    member1: _member1,
+    field_show_string: field
+  } do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that the custom field column header is displayed
+    assert html =~ field.name
+
+    # Check that the value is displayed
+    assert html =~ "+49123456789"
+  end
+
+  test "does not display custom field with show_in_overview: false", %{
+    conn: conn,
+    member1: _member1,
+    field_hide: field
+  } do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that the hidden custom field column header is NOT displayed
+    refute html =~ field.name
+
+    # Check that the value is NOT displayed
+    refute html =~ "Internal note"
+  end
+
+  test "displays multiple custom fields with show_in_overview: true", %{
+    conn: conn,
+    field_show_string: field_string,
+    field_show_integer: field_integer,
+    field_show_boolean: field_boolean
+  } do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that all visible custom field column headers are displayed
+    assert html =~ field_string.name
+    assert html =~ field_integer.name
+    assert html =~ field_boolean.name
+  end
+
+  test "formats string custom field values correctly", %{conn: conn, member1: _member1} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    assert html =~ "+49123456789"
+  end
+
+  test "formats integer custom field values correctly", %{conn: conn, member1: _member1} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    assert html =~ "12345"
+  end
+
+  test "formats boolean custom field values correctly", %{conn: conn, member1: _member1} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Boolean should be displayed as "Yes" or "No" or similar
+    # Check for true representation
+    assert html =~ "true" or html =~ "Yes" or html =~ "Ja"
+  end
+
+  test "formats date custom field values correctly", %{conn: conn, member1: _member1} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Date should be displayed in readable format
+    assert html =~ "1990" or html =~ "1990-05-15" or html =~ "15.05.1990"
+  end
+
+  test "formats email custom field values correctly", %{conn: conn, member1: _member1} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    assert html =~ "alice.private@example.com"
+  end
+
+  test "shows empty cell or placeholder for members without custom field values", %{
+    conn: conn,
+    member2: _member2,
+    field_show_string: field
+  } do
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # The custom field column should exist
+    assert html =~ field.name
+
+    # Member2 should have an empty cell for this field
+    # We check that member2's row exists but doesn't have the value
+    assert html =~ "Bob Brown"
+    # The value should not appear for member2 (only for member1)
+    # We check that the value appears somewhere (for member1) but member2 row should have "-"
+    assert html =~ "+49123456789"
+  end
+end

test/mv_web/member_live/index_custom_fields_edge_cases_test.exs

@@ -0,0 +1,173 @@
+defmodule MvWeb.MemberLive.IndexCustomFieldsEdgeCasesTest do
+  @moduledoc """
+  Edge case tests for custom fields in the member overview.
+
+  Tests cover:
+  - Custom field without values (all members have no value)
+  - Very long custom field values are correctly displayed
+  """
+  use MvWeb.ConnCase, async: true
+  import Phoenix.LiveViewTest
+  require Ash.Query
+
+  alias Mv.Membership.{CustomField, Member}
+
+  test "displays custom field column even when no members have values", %{conn: conn} do
+    # Create test members without custom field values
+    {:ok, _member1} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Alice",
+        last_name: "Anderson",
+        email: "alice@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, _member2} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Bob",
+        last_name: "Brown",
+        email: "bob@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom field with show_in_overview: true but no values
+    {:ok, field} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "membership_number",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that the custom field column header is still displayed
+    assert html =~ field.name
+  end
+
+  test "displays very long custom field values correctly", %{conn: conn} do
+    # Create test member
+    {:ok, member} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Alice",
+        last_name: "Anderson",
+        email: "alice@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom field
+    {:ok, field} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "long_note",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create very long value (but within limits)
+    long_value = String.duplicate("A", 500)
+
+    {:ok, _cfv} =
+      Mv.Membership.CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => long_value}
+      })
+      |> Ash.create()
+
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that the value is displayed (may be truncated in UI, but should be present)
+    # We check for at least part of the value
+    assert html =~ "A" or html =~ long_value
+  end
+
+  test "handles multiple custom fields with show_in_overview correctly", %{conn: conn} do
+    # Create test member
+    {:ok, member} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Alice",
+        last_name: "Anderson",
+        email: "alice@example.com"
+      })
+      |> Ash.create()
+
+    # Create multiple custom fields with show_in_overview: true
+    {:ok, field1} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "field1",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field2} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "field2",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field3} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "field3",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create values for all fields
+    {:ok, _cfv1} =
+      Mv.Membership.CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member.id,
+        custom_field_id: field1.id,
+        value: %{"_union_type" => "string", "_union_value" => "Value1"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv2} =
+      Mv.Membership.CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member.id,
+        custom_field_id: field2.id,
+        value: %{"_union_type" => "string", "_union_value" => "Value2"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv3} =
+      Mv.Membership.CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member.id,
+        custom_field_id: field3.id,
+        value: %{"_union_type" => "string", "_union_value" => "Value3"}
+      })
+      |> Ash.create()
+
+    conn = conn_with_oidc_user(conn)
+    {:ok, _view, html} = live(conn, "/members")
+
+    # Check that all custom field columns are displayed
+    assert html =~ field1.name
+    assert html =~ field2.name
+    assert html =~ field3.name
+
+    # Check that all values are displayed
+    assert html =~ "Value1"
+    assert html =~ "Value2"
+    assert html =~ "Value3"
+  end
+end

test/mv_web/member_live/index_custom_fields_sorting_test.exs

@@ -0,0 +1,459 @@
+defmodule MvWeb.MemberLive.IndexCustomFieldsSortingTest do
+  @moduledoc """
+  Tests for sorting by custom fields in the member overview.
+
+  Tests cover:
+  - Sorting by custom field (ascending)
+  - Sorting by custom field (descending)
+  - Sorting by custom field works with search
+  - Sorting by custom field works with URL parameters
+  - Sorting by custom field works with other columns
+  """
+  use MvWeb.ConnCase, async: true
+  import Phoenix.LiveViewTest
+  require Ash.Query
+
+  alias Mv.Membership.{CustomField, CustomFieldValue, Member}
+
+  setup do
+    # Create test members
+    {:ok, member1} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Alice",
+        last_name: "Anderson",
+        email: "alice@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member2} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Bob",
+        last_name: "Brown",
+        email: "bob@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member3} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "Charlie",
+        last_name: "Clark",
+        email: "charlie@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom field with show_in_overview: true
+    {:ok, field_string} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "membership_number",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    {:ok, field_integer} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "priority",
+        value_type: :integer,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create custom field values
+    {:ok, _cfv1} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_string.id,
+        value: %{"_union_type" => "string", "_union_value" => "A001"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv2} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member2.id,
+        custom_field_id: field_string.id,
+        value: %{"_union_type" => "string", "_union_value" => "C003"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv3} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member3.id,
+        custom_field_id: field_string.id,
+        value: %{"_union_type" => "string", "_union_value" => "B002"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv4} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member1.id,
+        custom_field_id: field_integer.id,
+        value: %{"_union_type" => "integer", "_union_value" => 10}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv5} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member2.id,
+        custom_field_id: field_integer.id,
+        value: %{"_union_type" => "integer", "_union_value" => 30}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv6} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member3.id,
+        custom_field_id: field_integer.id,
+        value: %{"_union_type" => "integer", "_union_value" => 20}
+      })
+      |> Ash.create()
+
+    %{
+      member1: member1,
+      member2: member2,
+      member3: member3,
+      field_string: field_string,
+      field_integer: field_integer
+    }
+  end
+
+  test "sorts by custom field ascending", %{conn: conn, field_string: field} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, "/members")
+
+    # Click on custom field column header to sort
+    view
+    |> element("[data-testid='custom_field_#{field.id}']")
+    |> render_click()
+
+    # Check URL was updated
+    assert_patch(view, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=asc")
+
+    # Verify sort state
+    assert has_element?(view, "[data-testid='custom_field_#{field.id}'][aria-label='ascending']")
+  end
+
+  test "sorts by custom field descending", %{conn: conn, field_string: field} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, "/members?sort_field=custom_field_#{field.id}&sort_order=asc")
+
+    # Click again to toggle to descending
+    view
+    |> element("[data-testid='custom_field_#{field.id}']")
+    |> render_click()
+
+    # Check URL was updated
+    assert_patch(view, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=desc")
+
+    # Verify sort state
+    assert has_element?(view, "[data-testid='custom_field_#{field.id}'][aria-label='descending']")
+  end
+
+  test "sorting by custom field works with search", %{conn: conn, field_string: field} do
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, "/members?query=Alice")
+
+    # Click on custom field column header to sort
+    view
+    |> element("[data-testid='custom_field_#{field.id}']")
+    |> render_click()
+
+    # Check URL maintains search query
+    assert_patch(view, "/members?query=Alice&sort_field=custom_field_#{field.id}&sort_order=asc")
+  end
+
+  test "sorting by custom field works with URL parameters", %{conn: conn, field_string: field} do
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=desc")
+
+    # Check that the sort state is correctly applied
+    assert has_element?(view, "[data-testid='custom_field_#{field.id}'][aria-label='descending']")
+  end
+
+  test "clicking different custom field column resets order to ascending", %{
+    conn: conn,
+    field_string: field_string,
+    field_integer: field_integer
+  } do
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field_string.id}&sort_order=desc")
+
+    # Click on a different custom field column
+    view
+    |> element("[data-testid='custom_field_#{field_integer.id}']")
+    |> render_click()
+
+    assert_patch(
+      view,
+      "/members?query=&sort_field=custom_field_#{field_integer.id}&sort_order=asc"
+    )
+  end
+
+  test "clicking regular column after custom field column works", %{
+    conn: conn,
+    field_string: field
+  } do
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=desc")
+
+    # Click on email column
+    view
+    |> element("[data-testid='email']")
+    |> render_click()
+
+    assert_patch(view, "/members?query=&sort_field=email&sort_order=asc")
+  end
+
+  test "clicking custom field column after regular column works", %{
+    conn: conn,
+    field_string: field
+  } do
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, "/members?query=&sort_field=email&sort_order=desc")
+
+    # Click on custom field column
+    view
+    |> element("[data-testid='custom_field_#{field.id}']")
+    |> render_click()
+
+    assert_patch(view, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=asc")
+  end
+
+  test "NULL values and empty strings are always sorted last (ASC)", %{conn: conn} do
+    # Create additional members with NULL and empty string values
+    {:ok, member_with_value} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "WithValue",
+        last_name: "Test",
+        email: "withvalue@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member_with_empty} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "WithEmpty",
+        last_name: "Test",
+        email: "withempty@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member_with_null} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "WithNull",
+        last_name: "Test",
+        email: "withnull@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member_with_another_value} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "AnotherValue",
+        last_name: "Test",
+        email: "another@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom field
+    {:ok, field} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "test_field",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create values: one with actual value, one with empty string, one with NULL (no value), another with value
+    {:ok, _cfv1} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member_with_value.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => "Zebra"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv2} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member_with_empty.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => ""}
+      })
+      |> Ash.create()
+
+    # member_with_null has no custom field value (NULL)
+
+    {:ok, _cfv3} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member_with_another_value.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => "Apple"}
+      })
+      |> Ash.create()
+
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=asc")
+
+    html = render(view)
+
+    # Find positions of member first names in the HTML to verify sort order
+    apple_pos = :binary.match(html, member_with_another_value.first_name)
+    zebra_pos = :binary.match(html, member_with_value.first_name)
+    empty_pos = :binary.match(html, member_with_empty.first_name)
+    null_pos = :binary.match(html, member_with_null.first_name)
+
+    assert apple_pos != :nomatch, "AnotherValue (Apple) should be in HTML"
+    assert zebra_pos != :nomatch, "WithValue (Zebra) should be in HTML"
+    assert empty_pos != :nomatch, "WithEmpty should be in HTML"
+    assert null_pos != :nomatch, "WithNull should be in HTML"
+
+    {apple_idx, _} = apple_pos
+    {zebra_idx, _} = zebra_pos
+    {empty_idx, _} = empty_pos
+    {null_idx, _} = null_pos
+
+    # In ASC order: Apple should come before Zebra
+    assert apple_idx < zebra_idx, "Apple should come before Zebra in ASC order"
+
+    # NULL and empty should come after all values
+    assert apple_idx < empty_idx, "Apple should come before empty value"
+    assert apple_idx < null_idx, "Apple should come before NULL value"
+    assert zebra_idx < empty_idx, "Zebra should come before empty value"
+    assert zebra_idx < null_idx, "Zebra should come before NULL value"
+  end
+
+  test "NULL values and empty strings are always sorted last (DESC)", %{conn: conn} do
+    # Create additional members with NULL and empty string values
+    {:ok, member_with_value} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "WithValue",
+        last_name: "Test",
+        email: "withvalue@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member_with_empty} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "WithEmpty",
+        last_name: "Test",
+        email: "withempty@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member_with_null} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "WithNull",
+        last_name: "Test",
+        email: "withnull@example.com"
+      })
+      |> Ash.create()
+
+    {:ok, member_with_another_value} =
+      Member
+      |> Ash.Changeset.for_create(:create_member, %{
+        first_name: "AnotherValue",
+        last_name: "Test",
+        email: "another@example.com"
+      })
+      |> Ash.create()
+
+    # Create custom field
+    {:ok, field} =
+      CustomField
+      |> Ash.Changeset.for_create(:create, %{
+        name: "test_field",
+        value_type: :string,
+        show_in_overview: true
+      })
+      |> Ash.create()
+
+    # Create values: one with actual value, one with empty string, one with NULL (no value), another with value
+    {:ok, _cfv1} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member_with_value.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => "Apple"}
+      })
+      |> Ash.create()
+
+    {:ok, _cfv2} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member_with_empty.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => ""}
+      })
+      |> Ash.create()
+
+    # member_with_null has no custom field value (NULL)
+
+    {:ok, _cfv3} =
+      CustomFieldValue
+      |> Ash.Changeset.for_create(:create, %{
+        member_id: member_with_another_value.id,
+        custom_field_id: field.id,
+        value: %{"_union_type" => "string", "_union_value" => "Zebra"}
+      })
+      |> Ash.create()
+
+    conn = conn_with_oidc_user(conn)
+
+    {:ok, view, _html} =
+      live(conn, "/members?query=&sort_field=custom_field_#{field.id}&sort_order=desc")
+
+    html = render(view)
+
+    # Find positions of member first names in the HTML to verify sort order
+    apple_pos = :binary.match(html, member_with_value.first_name)
+    zebra_pos = :binary.match(html, member_with_another_value.first_name)
+    empty_pos = :binary.match(html, member_with_empty.first_name)
+    null_pos = :binary.match(html, member_with_null.first_name)
+
+    assert apple_pos != :nomatch, "WithValue (Apple) should be in HTML"
+    assert zebra_pos != :nomatch, "AnotherValue (Zebra) should be in HTML"
+    assert empty_pos != :nomatch, "WithEmpty should be in HTML"
+    assert null_pos != :nomatch, "WithNull should be in HTML"
+
+    {apple_idx, _} = apple_pos
+    {zebra_idx, _} = zebra_pos
+    {empty_idx, _} = empty_pos
+    {null_idx, _} = null_pos
+
+    # In DESC order: Zebra should come before Apple
+    assert zebra_idx < apple_idx, "Zebra should come before Apple in DESC order"
+
+    # NULL and empty should come after all values
+    assert zebra_idx < empty_idx, "Zebra should come before empty value"
+    assert zebra_idx < null_idx, "Zebra should come before NULL value"
+    assert apple_idx < empty_idx, "Apple should come before empty value"
+    assert apple_idx < null_idx, "Apple should come before NULL value"
+  end
+end

test/mv_web/user_live/form_member_dropdown_test.exs

@@ -0,0 +1,149 @@
+defmodule MvWeb.UserLive.FormMemberDropdownTest do
+  @moduledoc """
+  UI tests for member linking dropdown visibility and email handling.
+  Tests dropdown behavior, visibility states, and email conflict scenarios.
+  Related to Issue #168.
+  """
+
+  use MvWeb.ConnCase, async: true
+
+  import Phoenix.LiveViewTest
+
+  alias Mv.Membership
+
+  # Helper to setup authenticated connection for admin
+  defp setup_admin_conn(conn) do
+    conn_with_oidc_user(conn, %{email: "admin@example.com"})
+  end
+
+  describe "dropdown visibility" do
+    test "dropdown hidden on mount", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      {:ok, _view, html} = live(conn, ~p"/users/new")
+
+      # Dropdown should not be visible initially
+      refute html =~ ~r/role="listbox"/
+    end
+
+    test "dropdown shows after focus event", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      # Create unlinked members
+      create_unlinked_members(3)
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Focus the member search input
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      html = render(view)
+
+      # Dropdown should now be visible
+      assert html =~ ~r/role="listbox"/
+    end
+
+    test "dropdown shows top 10 unlinked members on focus", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      # Create 15 unlinked members
+      _members = create_unlinked_members(15)
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Focus the member search input
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      html = render(view)
+
+      # Count how many member entries are shown in the dropdown
+      # Each member creates a div with role="option"
+      member_count = html |> String.split(~r/role="option"/) |> length() |> Kernel.-(1)
+
+      # Should show exactly 10 members (limit)
+      assert member_count == 10
+    end
+  end
+
+  describe "email handling" do
+    test "links user and member with identical email successfully", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "David",
+          last_name: "Miller",
+          email: "david@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Fill user form with same email
+      view
+      |> form("#user-form", user: %{email: "david@example.com"})
+      |> render_change()
+
+      # Focus input
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      # Select member
+      view
+      |> element("[data-member-id='#{member.id}']")
+      |> render_click()
+
+      # Submit form
+      view
+      |> form("#user-form", user: %{email: "david@example.com"})
+      |> render_submit()
+
+      # Should succeed without errors
+      assert_redirected(view, ~p"/users")
+    end
+
+    test "shows member with same email in dropdown", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, _member} =
+        Membership.create_member(%{
+          first_name: "Emma",
+          last_name: "Davis",
+          email: "emma@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Fill user form with same email
+      view
+      |> form("#user-form", user: %{email: "emma@example.com"})
+      |> render_change()
+
+      # Focus the member search to trigger loading
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      html = render(view)
+
+      # Should show member with matching email in dropdown
+      assert html =~ "Emma Davis"
+      assert html =~ "emma@example.com"
+    end
+  end
+
+  # Helper functions
+  defp create_unlinked_members(count) do
+    for i <- 1..count do
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "FirstName#{i}",
+          last_name: "LastName#{i}",
+          email: "member#{i}@example.com"
+        })
+
+      member
+    end
+  end
+end

test/mv_web/user_live/form_member_search_test.exs

@@ -0,0 +1,112 @@
+defmodule MvWeb.UserLive.FormMemberSearchTest do
+  @moduledoc """
+  UI tests for fuzzy search functionality in member linking.
+  Tests PostgreSQL trigram-based fuzzy search behavior.
+  Related to Issue #168.
+  """
+
+  use MvWeb.ConnCase, async: true
+
+  import Phoenix.LiveViewTest
+
+  alias Mv.Membership
+
+  # Helper to setup authenticated connection for admin
+  defp setup_admin_conn(conn) do
+    conn_with_oidc_user(conn, %{email: "admin@example.com"})
+  end
+
+  describe "fuzzy search" do
+    test "finds member with exact name", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, _member} =
+        Membership.create_member(%{
+          first_name: "Jonathan",
+          last_name: "Smith",
+          email: "jonathan.smith@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Type exact name
+      view
+      |> element("#member-search-input")
+      |> render_change(%{"member_search" => "Jonathan"})
+
+      html = render(view)
+
+      assert html =~ "Jonathan"
+      assert html =~ "Smith"
+    end
+
+    test "finds member with typo (Jon finds Jonathan)", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, _member} =
+        Membership.create_member(%{
+          first_name: "Jonathan",
+          last_name: "Smith",
+          email: "jonathan.smith@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Type with typo
+      view
+      |> element("#member-search-input")
+      |> render_change(%{"member_search" => "Jon"})
+
+      html = render(view)
+
+      # Fuzzy search should find Jonathan
+      assert html =~ "Jonathan"
+      assert html =~ "Smith"
+    end
+
+    test "finds member with partial substring", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, _member} =
+        Membership.create_member(%{
+          first_name: "Alexander",
+          last_name: "Williams",
+          email: "alex@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Type partial
+      view
+      |> element("#member-search-input")
+      |> render_change(%{"member_search" => "lex"})
+
+      html = render(view)
+
+      assert html =~ "Alexander"
+    end
+
+    test "shows partial match with similar names", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, _member} =
+        Membership.create_member(%{
+          first_name: "Johnny",
+          last_name: "Doeson",
+          email: "johnny@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Type partial match
+      view
+      |> element("#member-search-input")
+      |> render_change(%{"member_search" => "John"})
+
+      html = render(view)
+
+      # Should find member with similar name
+      assert html =~ "Johnny"
+    end
+  end
+end

test/mv_web/user_live/form_member_selection_test.exs

@@ -0,0 +1,233 @@
+defmodule MvWeb.UserLive.FormMemberSelectionTest do
+  @moduledoc """
+  UI tests for member selection and unlink workflow.
+  Tests member selection behavior and unlink process.
+  Related to Issue #168.
+  """
+
+  use MvWeb.ConnCase, async: true
+
+  import Phoenix.LiveViewTest
+
+  alias Mv.Accounts
+  alias Mv.Membership
+
+  # Helper to setup authenticated connection for admin
+  defp setup_admin_conn(conn) do
+    conn_with_oidc_user(conn, %{email: "admin@example.com"})
+  end
+
+  describe "member selection" do
+    test "input field shows selected member name", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Alice",
+          last_name: "Johnson",
+          email: "alice@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Focus and search
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      # Select member
+      view
+      |> element("[data-member-id='#{member.id}']")
+      |> render_click()
+
+      html = render(view)
+
+      # Input field should show member name
+      assert html =~ "Alice Johnson"
+    end
+
+    test "confirmation box appears", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Bob",
+          last_name: "Williams",
+          email: "bob@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Focus input
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      # Select member
+      view
+      |> element("[data-member-id='#{member.id}']")
+      |> render_click()
+
+      html = render(view)
+
+      # Confirmation box should appear
+      assert html =~ "Selected"
+      assert html =~ "Bob Williams"
+      assert html =~ "Save to confirm linking"
+    end
+
+    test "hidden input stores member ID", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Charlie",
+          last_name: "Brown",
+          email: "charlie@example.com"
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/new")
+
+      # Focus input
+      view
+      |> element("#member-search-input")
+      |> render_focus()
+
+      # Select member
+      view
+      |> element("[data-member-id='#{member.id}']")
+      |> render_click()
+
+      # Check socket assigns (member ID should be stored)
+      assert view |> element("#user-form") |> has_element?()
+    end
+  end
+
+  describe "unlink workflow" do
+    test "unlink hides dropdown", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      # Create user with linked member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Frank",
+          last_name: "Wilson",
+          email: "frank@example.com"
+        })
+
+      {:ok, user} =
+        Accounts.create_user(%{
+          email: "frank@example.com",
+          member: %{id: member.id}
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/#{user.id}/edit")
+
+      # Click unlink button
+      view
+      |> element("button[phx-click='unlink_member']")
+      |> render_click()
+
+      html = render(view)
+
+      # Dropdown should not be visible
+      refute html =~ ~r/role="listbox"/
+    end
+
+    test "unlink shows warning", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      # Create user with linked member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Grace",
+          last_name: "Taylor",
+          email: "grace@example.com"
+        })
+
+      {:ok, user} =
+        Accounts.create_user(%{
+          email: "grace@example.com",
+          member: %{id: member.id}
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/#{user.id}/edit")
+
+      # Click unlink button
+      view
+      |> element("button[phx-click='unlink_member']")
+      |> render_click()
+
+      html = render(view)
+
+      # Should show warning
+      assert html =~ "Unlinking scheduled"
+      assert html =~ "Cannot select new member until saved"
+    end
+
+    test "unlink disables input", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      # Create user with linked member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Henry",
+          last_name: "Anderson",
+          email: "henry@example.com"
+        })
+
+      {:ok, user} =
+        Accounts.create_user(%{
+          email: "henry@example.com",
+          member: %{id: member.id}
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/#{user.id}/edit")
+
+      # Click unlink button
+      view
+      |> element("button[phx-click='unlink_member']")
+      |> render_click()
+
+      html = render(view)
+
+      # Input should be disabled
+      assert html =~ ~r/disabled/
+    end
+
+    test "save re-enables member selection", %{conn: conn} do
+      conn = setup_admin_conn(conn)
+      # Create user with linked member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Isabel",
+          last_name: "Martinez",
+          email: "isabel@example.com"
+        })
+
+      {:ok, user} =
+        Accounts.create_user(%{
+          email: "isabel@example.com",
+          member: %{id: member.id}
+        })
+
+      {:ok, view, _html} = live(conn, ~p"/users/#{user.id}/edit")
+
+      # Click unlink button
+      view
+      |> element("button[phx-click='unlink_member']")
+      |> render_click()
+
+      # Submit form
+      view
+      |> form("#user-form")
+      |> render_submit()
+
+      # Navigate back to edit
+      {:ok, view, _html} = live(conn, ~p"/users/#{user.id}/edit")
+
+      html = render(view)
+
+      # Should now show member selection input (not disabled)
+      assert html =~ "member-search-input"
+      refute html =~ "Unlinking scheduled"
+    end
+  end
+end

test/mv_web/user_live/form_test.exs

@@ -281,4 +281,101 @@ defmodule MvWeb.UserLive.FormTest do
       assert edit_html =~ "Change Password"
     end
   end
+
+  describe "member linking - display" do
+    test "shows linked member with unlink button when user has member", %{conn: conn} do
+      # Create member
+      {:ok, member} =
+        Mv.Membership.create_member(%{
+          first_name: "John",
+          last_name: "Doe",
+          email: "john@example.com"
+        })
+
+      # Create user linked to member
+      user = create_test_user(%{email: "user@example.com"})
+      {:ok, _updated_user} = Mv.Accounts.update_user(user, %{member: %{id: member.id}})
+
+      # Load form
+      {:ok, view, html} = setup_live_view(conn, "/users/#{user.id}/edit")
+
+      # Should show linked member section
+      assert html =~ "Linked Member"
+      assert html =~ "John Doe"
+      assert html =~ "user@example.com"
+      assert has_element?(view, "button[phx-click='unlink_member']")
+      assert html =~ "Unlink Member"
+    end
+
+    test "shows member search field when user has no member", %{conn: conn} do
+      user = create_test_user(%{email: "user@example.com"})
+      {:ok, view, html} = setup_live_view(conn, "/users/#{user.id}/edit")
+
+      # Should show member search section
+      assert html =~ "Linked Member"
+      assert has_element?(view, "input[phx-change='search_members']")
+      # Should not show unlink button
+      refute has_element?(view, "button[phx-click='unlink_member']")
+    end
+  end
+
+  describe "member linking - workflow" do
+    test "selecting member and saving links member to user", %{conn: conn} do
+      # Create unlinked member
+      {:ok, member} =
+        Mv.Membership.create_member(%{
+          first_name: "Jane",
+          last_name: "Smith",
+          email: "jane@example.com"
+        })
+
+      # Create user without member
+      user = create_test_user(%{email: "user@example.com"})
+      {:ok, view, _html} = setup_live_view(conn, "/users/#{user.id}/edit")
+
+      # Select member
+      view |> element("div[data-member-id='#{member.id}']") |> render_click()
+
+      # Submit form
+      view
+      |> form("#user-form", user: %{email: "user@example.com"})
+      |> render_submit()
+
+      assert_redirected(view, "/users")
+
+      # Verify member is linked
+      updated_user = Ash.get!(Mv.Accounts.User, user.id, domain: Mv.Accounts, load: [:member])
+      assert updated_user.member.id == member.id
+    end
+
+    test "unlinking member and saving removes member from user", %{conn: conn} do
+      # Create member
+      {:ok, member} =
+        Mv.Membership.create_member(%{
+          first_name: "Bob",
+          last_name: "Wilson",
+          email: "bob@example.com"
+        })
+
+      # Create user linked to member
+      user = create_test_user(%{email: "user@example.com"})
+      {:ok, _} = Mv.Accounts.update_user(user, %{member: %{id: member.id}})
+
+      {:ok, view, _html} = setup_live_view(conn, "/users/#{user.id}/edit")
+
+      # Click unlink button
+      view |> element("button[phx-click='unlink_member']") |> render_click()
+
+      # Submit form
+      view
+      |> form("#user-form", user: %{email: "user@example.com"})
+      |> render_submit()
+
+      assert_redirected(view, "/users")
+
+      # Verify member is unlinked
+      updated_user = Ash.get!(Mv.Accounts.User, user.id, domain: Mv.Accounts, load: [:member])
+      assert is_nil(updated_user.member)
+    end
+  end
 end

test/mv_web/user_live/index_test.exs

@@ -410,4 +410,35 @@ defmodule MvWeb.UserLive.IndexTest do
       assert html =~ long_email
     end
   end
+
+  describe "member linking display" do
+    test "displays linked member name in user list", %{conn: conn} do
+      # Create member
+      {:ok, member} =
+        Mv.Membership.create_member(%{
+          first_name: "Alice",
+          last_name: "Johnson",
+          email: "alice@example.com"
+        })
+
+      # Create user linked to member
+      user = create_test_user(%{email: "user@example.com"})
+      {:ok, _updated_user} = Mv.Accounts.update_user(user, %{member: %{id: member.id}})
+
+      # Create another user without member
+      _unlinked_user = create_test_user(%{email: "unlinked@example.com"})
+
+      conn = conn_with_oidc_user(conn)
+      {:ok, _view, html} = live(conn, "/users")
+
+      # Should show linked member name
+      assert html =~ "Alice Johnson"
+      # Should show user email
+      assert html =~ "user@example.com"
+      # Should show unlinked user
+      assert html =~ "unlinked@example.com"
+      # Should show "No member linked" or similar for unlinked user
+      assert html =~ "No member linked"
+    end
+  end
 end

test/support/fixtures.ex

@@ -0,0 +1,96 @@
+defmodule Mv.Fixtures do
+  @moduledoc """
+  Shared test fixtures for consistent test data creation.
+
+  This module provides factory functions for creating test data across
+  different test suites, ensuring consistency and reducing duplication.
+  """
+
+  @doc """
+  Creates a member with default or custom attributes.
+
+  ## Parameters
+    - `attrs` - Map or keyword list of attributes to override defaults
+
+  ## Returns
+    - Member struct
+
+  ## Examples
+
+      iex> member_fixture()
+      %Mv.Membership.Member{first_name: "Test", ...}
+
+      iex> member_fixture(%{first_name: "Alice", email: "alice@example.com"})
+      %Mv.Membership.Member{first_name: "Alice", email: "alice@example.com"}
+
+  """
+  def member_fixture(attrs \\ %{}) do
+    attrs
+    |> Enum.into(%{
+      first_name: "Test",
+      last_name: "Member",
+      email: "test#{System.unique_integer([:positive])}@example.com"
+    })
+    |> Mv.Membership.create_member()
+    |> case do
+      {:ok, member} -> member
+      {:error, error} -> raise "Failed to create member: #{inspect(error)}"
+    end
+  end
+
+  @doc """
+  Creates a user with default or custom attributes.
+
+  ## Parameters
+    - `attrs` - Map or keyword list of attributes to override defaults
+
+  ## Returns
+    - User struct
+
+  ## Examples
+
+      iex> user_fixture()
+      %Mv.Accounts.User{email: "user123@example.com"}
+
+      iex> user_fixture(%{email: "custom@example.com"})
+      %Mv.Accounts.User{email: "custom@example.com"}
+
+  """
+  def user_fixture(attrs \\ %{}) do
+    attrs
+    |> Enum.into(%{
+      email: "user#{System.unique_integer([:positive])}@example.com"
+    })
+    |> Mv.Accounts.create_user()
+    |> case do
+      {:ok, user} -> user
+      {:error, error} -> raise "Failed to create user: #{inspect(error)}"
+    end
+  end
+
+  @doc """
+  Creates a user linked to a member.
+
+  ## Parameters
+    - `user_attrs` - Map or keyword list of user attributes
+    - `member_attrs` - Map or keyword list of member attributes
+
+  ## Returns
+    - Tuple of {user, member}
+
+  ## Examples
+
+      iex> {user, member} = linked_user_member_fixture()
+      iex> user.member_id == member.id
+      true
+
+  """
+  def linked_user_member_fixture(user_attrs \\ %{}, member_attrs \\ %{}) do
+    member = member_fixture(member_attrs)
+
+    user_attrs = Map.put(user_attrs, :member, %{id: member.id})
+    user = user_fixture(user_attrs)
+
+    {user, member}
+  end
+end