class Module def include_all_modules_from(parent_module) parent_module.constants.each do |const| mod = parent_module.const_get(const) if mod.class == Module send(:include, mod) include_all_modules_from(mod) end end end end def helper(*helper_names) returning @helper_proxy ||= Object.new do |helper| helper_names.each { |h| helper.extend "#{h}_helper".classify.constantize } end end require 'application' class << helper include_all_modules_from ActionView end @controller = ApplicationController.new helper :application rescue nil