initializer for helping to find partials in large applications

action_view_base.rb

if development?
  module ActionView
    class Base

      alias_method :rails_render, :render

      # add debugging comments for partials to the rendered html
      def render(options = {}, local_assigns = {}, &block)
        output = rails_render(options, local_assigns, &block)
        if options.respond_to?(:keys) && options[:partial] && (response.content_type.nil? || response.content_type =~ /html/)
          debug_output = "rendering partial '#{options[:partial]}'"
          output = "<!-- START #{debug_output} -->\n#{output}\n<!-- END #{debug_output} -->"
        end
        output
      end
    end
  end
end