rendeer_with_partial_annotation.rb

Application.configure do
  config.after_initialize do
    # Partialの情報をHTMLに埋める
    # For ActionPack 3.2.8
    class ActionView::PartialRenderer
      def render_with_partial_annotation(*args)
        setup(*args)
        path = @path

        content = "".html_safe

        content << "<!- BEGIN: #{path} -->\n".html_safe if path
        content << render_without_partial_annotation(*args)
        content << "<!- END: #{path} -->\n".html_safe if path

        content
      end
      alias_method_chain :render, :partial_annotation
    end
  end
end