#47

backend/app/controllers/wiki_assets_controller.rb

@@ -7,7 +7,7 @@ class WikiAssetsController < ApplicationController
     page = WikiPage.find_by(id: page_id)
     return head :not_found unless page
 
-    render json: page.assets
+    render json: WikiAssetRepr.many(page.assets)
   end
 
   def create
@@ -34,6 +34,6 @@ class WikiAssetsController < ApplicationController
       page.update!(next_asset_no: no + 1)
     end
 
-    render json: asset.as_json(only: [:wiki_page_id, :no], methods: [:url])
+    render json: WikiAssetRepr.base(asset)
   end
 end

backend/app/representations/wiki_asset_repr.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+
+module WikiAssetRepr
+  BASE = { only: [:wiki_page_id, :no], methods: [:url] }.freeze
+
+  module_function
+
+  def base wiki_asset
+    wiki_asset.as_json(BASE)
+  end
+
+  def many wiki_assets
+    wiki_assets.map { |a| base(a) }
+  end
+end