#47

backend/db/migrate/20260323192300_create_wiki_assets.rb

@@ -1,6 +1,6 @@
 class CreateWikiAssets < ActiveRecord::Migration[8.0]
   def change
-    create_table :wiki_assets, primary_key: [:wiki_page_id, :no] do |t|
+    create_table :wiki_assets do |t|
       t.references :wiki_page, null: false, foreign_key: true, index: false
       t.integer :no, null: false
       t.string :alt_text
@@ -10,6 +10,7 @@ class CreateWikiAssets < ActiveRecord::Migration[8.0]
     end
 
     add_index :wiki_assets, [:wiki_page_id, :sha256], unique: true
+    add_index :wiki_assets, [:wiki_page_id, :no], unique: true
 
     add_column :wiki_pages, :next_asset_no, :integer, null: false, default: 1
   end