A rails LayoutHelper

layout_helper.rb

module LayoutHelper
  ActionMapping   = {
    'create' => 'new',
    'update' => 'edit',
  }

private

  def rendered_action
    @_rendered_action ||= begin
      action_name = controller.action_name
      ActionMapping.fetch(action_name, action_name)
    end
  end

  def page_body_id
    "page_#{controller.controller_path}/#{rendered_action}".tr('/','_')
  end

  def include_template_stylesheet
    path          = "views/#{controller.controller_path}/#{rendered_action}"
    glob_pattern  = "app/assets/stylesheets/#{path}.{css,sass,erb,css.sass}"
    if Dir.glob(glob_pattern).empty?
      "<!-- No view specific stylesheet (#{glob_pattern}) -->".html_safe
    else
      stylesheet_link_tag path
    end
  end

  def include_template_javascript
    path          = "views/#{controller.controller_path}/#{rendered_action}"
    glob_pattern  = "app/assets/javascripts/#{path}.{js,erb}"
    if Dir.glob(glob_pattern).empty?
      "<!-- No view specific javascript (#{glob_pattern}) -->".html_safe
    else
      javascript_include_tag path
    end
  end
end