feat: add custom field slug

priv/repo/migrations/20251113180429_add_slug_to_custom_fields.exs

@@ -0,0 +1,47 @@
+defmodule Mv.Repo.Migrations.AddSlugToCustomFields 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
+    # Step 1: Add slug column as nullable first
+    alter table(:custom_fields) do
+      add :slug, :text, null: true
+    end
+
+    # Step 2: Generate slugs for existing custom fields
+    execute("""
+    UPDATE custom_fields
+    SET slug = lower(
+      regexp_replace(
+        regexp_replace(
+          regexp_replace(name, '[^a-zA-Z0-9\\s-]', '', 'g'),
+          '\\s+', '-', 'g'
+        ),
+        '-+', '-', 'g'
+      )
+    )
+    WHERE slug IS NULL
+    """)
+
+    # Step 3: Make slug NOT NULL
+    alter table(:custom_fields) do
+      modify :slug, :text, null: false
+    end
+
+    # Step 4: Create unique index
+    create unique_index(:custom_fields, [:slug], name: "custom_fields_unique_slug_index")
+  end
+
+  def down do
+    drop_if_exists unique_index(:custom_fields, [:slug], name: "custom_fields_unique_slug_index")
+
+    alter table(:custom_fields) do
+      remove :slug
+    end
+  end
+end