Show dates in european format

lib/mv_web/helpers/date_formatter.ex

@@ -0,0 +1,27 @@
+defmodule MvWeb.Helpers.DateFormatter do
+  @moduledoc """
+  Centralized date formatting helper for the application.
+  Formats dates in European format (dd.mm.yyyy).
+  """
+
+  use Gettext, backend: MvWeb.Gettext
+
+  @doc """
+  Formats a Date struct to European format (dd.mm.yyyy).
+
+  ## Examples
+
+      iex> MvWeb.Helpers.DateFormatter.format_date(~D[2024-03-15])
+      "15.03.2024"
+
+      iex> MvWeb.Helpers.DateFormatter.format_date(nil)
+      ""
+  """
+  def format_date(%Date{} = date) do
+    Calendar.strftime(date, "%d.%m.%Y")
+  end
+
+  def format_date(nil), do: ""
+
+  def format_date(_), do: "Invalid date"
+end

lib/mv_web/live/member_live/index.ex

@@ -32,6 +32,7 @@ defmodule MvWeb.MemberLive.Index do
 
   alias Mv.Membership
   alias MvWeb.MemberLive.Index.Formatter
+  alias MvWeb.Helpers.DateFormatter
 
   # Prefix used in sort field names for custom fields (e.g., "custom_field_<id>")
   @custom_field_prefix "custom_field_"
@@ -932,4 +933,7 @@ defmodule MvWeb.MemberLive.Index do
       Map.get(visibility_config, Atom.to_string(field), true)
     end)
   end
+
+  # Public helper function to format dates for use in templates
+  def format_date(date), do: DateFormatter.format_date(date)
 end

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

@@ -219,7 +219,7 @@
         """
       }
     >
-      {member.join_date}
+      {MvWeb.MemberLive.Index.format_date(member.join_date)}
     </:col>
     <:col :let={member} label={gettext("Paid")}>
       <span class={[

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

@@ -6,6 +6,7 @@ defmodule MvWeb.MemberLive.Index.Formatter do
   formats them appropriately for display in the UI.
   """
   use Gettext, backend: MvWeb.Gettext
+  alias MvWeb.Helpers.DateFormatter
 
   @doc """
   Formats a custom field value for display.
@@ -61,11 +62,11 @@ defmodule MvWeb.MemberLive.Index.Formatter do
   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(%Date{} = date, :date, _), do: DateFormatter.format_date(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)
+      {:ok, date} -> DateFormatter.format_date(date)
       _ -> value
     end
   end

lib/mv_web/live/member_live/show.ex

@@ -23,6 +23,7 @@ defmodule MvWeb.MemberLive.Show do
   """
   use MvWeb, :live_view
   import Ash.Query
+  alias MvWeb.Helpers.DateFormatter
 
   @impl true
   def render(assigns) do
@@ -52,8 +53,8 @@ defmodule MvWeb.MemberLive.Show do
           {if @member.paid, do: gettext("Yes"), else: gettext("No")}
         </:item>
         <:item title={gettext("Phone Number")}>{@member.phone_number}</:item>
-        <:item title={gettext("Join Date")}>{@member.join_date}</:item>
-        <:item title={gettext("Exit Date")}>{@member.exit_date}</:item>
+        <:item title={gettext("Join Date")}>{DateFormatter.format_date(@member.join_date)}</:item>
+        <:item title={gettext("Exit Date")}>{DateFormatter.format_date(@member.exit_date)}</:item>
         <:item title={gettext("Notes")}>{@member.notes}</:item>
         <:item title={gettext("City")}>{@member.city}</:item>
         <:item title={gettext("Street")}>{@member.street}</:item>
@@ -81,10 +82,7 @@ defmodule MvWeb.MemberLive.Show do
             # name
             cfv.custom_field && cfv.custom_field.name,
             # value
-            case cfv.value do
-              %{value: v} -> v
-              v -> v
-            end
+            format_custom_field_value(cfv)
           }
         end)
       } />
@@ -114,4 +112,17 @@ defmodule MvWeb.MemberLive.Show do
 
   defp page_title(:show), do: gettext("Show Member")
   defp page_title(:edit), do: gettext("Edit Member")
+
+  defp format_custom_field_value(cfv) do
+    value =
+      case cfv.value do
+        %{value: v} -> v
+        v -> v
+      end
+
+    case value do
+      %Date{} = date -> DateFormatter.format_date(date)
+      other -> other
+    end
+  end
 end

test/mv_web/member_live/index_custom_fields_display_test.exs

@@ -231,8 +231,8 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsDisplayTest 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"
+    # Date should be displayed in European format (dd.mm.yyyy)
+    assert html =~ "15.05.1990"
   end
 
   test "formats email custom field values correctly", %{conn: conn, member1: _member1} do