property value as Union type

Justfile

@@ -33,3 +33,21 @@ test:
 
 format:
     mix format
+
+
+regen-migrations migration_name:
+  #!/bin/bash
+  set -euo pipefail
+  # Get count of untracked migrations
+  N_MIGRATIONS=$(git ls-files --others priv/repo/migrations | wc -l)
+  # Rollback untracked migrations
+  mix ash_postgres.rollback -n $N_MIGRATIONS
+  # Delete untracked migrations and snapshots
+  git ls-files --others priv/repo/migrations | xargs rm
+  git ls-files --others priv/resource_snapshots | xargs rm
+  # Regenerate migrations
+  mix ash.codegen --name {{migration_name}}
+  # Run migrations if flag
+  if echo $* | grep -e "-m" -q; then
+    mix ash.migrate
+  fi

lib/membership/property.ex

@@ -16,8 +16,16 @@ defmodule Mv.Membership.Property do
   attributes do
     uuid_primary_key :id
 
-    attribute :value, :string,
-      description: "Speichert den Wert, Typ-Interpretation per property_type.typ"
+    attribute :value, :union,
+      constraints: [
+        storage: :type_and_value,
+        types: [
+          boolean: [type: :boolean],
+          date: [type: :date],
+          integer: [type: :integer],
+          string: [type: :string]
+        ]
+      ]
   end
 
   relationships do
@@ -25,4 +33,8 @@ defmodule Mv.Membership.Property do
 
     belongs_to :property_type, Mv.Membership.PropertyType
   end
+
+  calculations do
+    calculate :value_to_string, :string, expr(value[:value] <> "")
+  end
 end

lib/membership/property_type.ex

@@ -10,7 +10,7 @@ defmodule Mv.Membership.PropertyType do
 
   actions do
     defaults [:create, :read, :update, :destroy]
-    default_accept [:name, :type, :description, :immutable, :required]
+    default_accept [:name, :value_type, :description, :immutable, :required]
   end
 
   attributes do
@@ -18,7 +18,8 @@ defmodule Mv.Membership.PropertyType do
 
     attribute :name, :string, allow_nil?: false, public?: true
 
-    attribute :type, :string,
+    attribute :value_type, :atom,
+      constraints: [one_of: [:string, :integer, :boolean, :date]],
       allow_nil?: false,
       description: "Definies the datatype `Property.value` is interpreted as"
 

lib/mv_web/member_live/form_component.ex

@@ -9,7 +9,11 @@ defmodule MvWeb.MemberLive.FormComponent do
       Enum.map(property_types, fn pt ->
         %{
           "property_type_id" => pt.id,
-          "value" => nil
+          "value" => %{
+            "type" => pt.value_type,
+            "value" => nil,
+            "_union_type" => Atom.to_string(pt.value_type)
+          }
         }
       end)
 
@@ -34,7 +38,9 @@ defmodule MvWeb.MemberLive.FormComponent do
       >
         <.inputs_for :let={f_property} field={@form[:properties]}>
           <% type = Enum.find(@property_types, &(&1.id == f_property[:property_type_id].value)) %>
-          <.input field={f_property[:value]} label={type && type.name} />
+          <.inputs_for :let={value_form} field={f_property[:value]}>
+            <.input field={value_form[:value]} label={type && type.name} />
+          </.inputs_for>
           <input
             type="hidden"
             name={f_property[:property_type_id].name}
@@ -95,12 +101,27 @@ defmodule MvWeb.MemberLive.FormComponent do
           not Enum.member?(existing_properties, Map.get(i, "property_type_id"))
         end
 
+        params = %{
+          "properties" =>
+            Enum.map(member.properties, fn prop ->
+              %{
+                "property_type_id" => prop.property_type_id,
+                "value" => %{
+                  "_union_type" => Atom.to_string(prop.value.type),
+                  "type" => prop.value.type,
+                  "value" => prop.value.value
+                }
+              }
+            end)
+        }
+
         form =
           AshPhoenix.Form.for_update(
             member,
             :update_member,
             api: Mv.Membership,
             as: "member",
+            params: params,
             forms: [auto?: true]
           )
 

priv/repo/migrations/20250528163901_initial_migration.exs

@@ -11,7 +11,7 @@ defmodule Mv.Repo.Migrations.InitialMigration do
     create table(:property_types, primary_key: false) do
       add :id, :uuid, null: false, default: fragment("gen_random_uuid()"), primary_key: true
       add :name, :text, null: false
-      add :type, :text, null: false
+      add :value_type, :text, null: false
       add :description, :text
       add :immutable, :boolean, null: false, default: false
       add :required, :boolean, null: false, default: false
@@ -21,7 +21,7 @@ defmodule Mv.Repo.Migrations.InitialMigration do
 
     create table(:properties, primary_key: false) do
       add :id, :uuid, null: false, default: fragment("gen_random_uuid()"), primary_key: true
-      add :value, :text
+      add :value, :map
       add :member_id, :uuid
       add :property_type_id, :uuid
     end

priv/repo/seeds.exs

@@ -15,14 +15,35 @@ alias Mv.Membership
 for attrs <- [
       %{
         name: "Vorname",
-        type: "string",
+        value_type: :string,
         description: "Vorname des Mitglieds",
         immutable: true,
         required: true
       },
+      %{
+        name: "Nachname",
+        value_type: :string,
+        description: "Nachname des Mitglieds",
+        immutable: true,
+        required: true
+      },
+      %{
+        name: "Geburtsdatum",
+        value_type: :date,
+        description: "Geburtsdatum des Mitglieds",
+        immutable: true,
+        required: true
+      },
+      %{
+        name: "Bezahlt",
+        value_type: :boolean,
+        description: "Status des Mitgliedsbeitrages des Mitglieds",
+        immutable: true,
+        required: true
+      },
       %{
         name: "Email",
-        type: "string",
+        value_type: :string,
         description: "Email-Adresse des Mitglieds",
         immutable: true,
         required: true

priv/resource_snapshots/repo/members/20250528163901.json

@@ -16,7 +16,7 @@
   "custom_indexes": [],
   "custom_statements": [],
   "has_create_action": true,
-  "hash": "A0402269CB456075B81CA4CB3A2135A2C88D8B7FD51CD7A23084AA5264FEE344",
+  "hash": "35D45214D6D344B0AF6CFCB69B8682FCB3D382D85883D3D3AAC1AEE7F54FD89A",
   "identities": [],
   "multitenancy": {
     "attribute": null,

priv/resource_snapshots/repo/properties/20250528163901.json

@@ -18,7 +18,7 @@
       "references": null,
       "size": null,
       "source": "value",
-      "type": "text"
+      "type": "map"
     },
     {
       "allow_nil?": true,
@@ -84,7 +84,7 @@
   "custom_indexes": [],
   "custom_statements": [],
   "has_create_action": true,
-  "hash": "F2A42A3427E0428637F465E4F357A3BE21B33231F94CF77B4843084128F6BDA5",
+  "hash": "8CF241CB9E8239511914EDEC96186BB7879529372BD8A4162431CCE9961F4F1B",
   "identities": [],
   "multitenancy": {
     "attribute": null,

priv/resource_snapshots/repo/property_types/20250528163901.json

@@ -27,7 +27,7 @@
       "primary_key?": false,
       "references": null,
       "size": null,
-      "source": "type",
+      "source": "value_type",
       "type": "text"
     },
     {
@@ -66,7 +66,7 @@
   "custom_indexes": [],
   "custom_statements": [],
   "has_create_action": true,
-  "hash": "47210108DE1E7B2A20A67205E875B3440526941E61AB95B166976E8CD8AA0955",
+  "hash": "F98A723AE0D20005FBE4205E46ABEE09A88DFF9334C85BADC1FBEEF100F3E25B",
   "identities": [
     {
       "all_tenants?": false,

regen_migrations.sh

@@ -1,19 +0,0 @@
-#!/bin/bash
-
-# Get count of untracked migrations
-N_MIGRATIONS=$(git ls-files --others priv/repo/migrations | wc -l)
-
-# Rollback untracked migrations
-mix ash_postgres.rollback -n $N_MIGRATIONS
-
-# Delete untracked migrations and snapshots
-git ls-files --others priv/repo/migrations | xargs rm
-git ls-files --others priv/resource_snapshots | xargs rm
-
-# Regenerate migrations
-mix ash.codegen --name $1
-
-# Run migrations if flag
-if echo $* | grep -e "-m" -q; then
-        mix ash.migrate
-fi