module ActionView::Helpers::ControllerHelper

def assign_controller(controller)
  if @_controller = controller
    @_request = controller.request if controller.respond_to?(:request)
    @_config  = controller.config.inheritable_copy if controller.respond_to?(:config)
    @_default_form_builder = controller.default_form_builder if controller.respond_to?(:default_form_builder)
  else
    @_request ||= nil
    @_config ||= nil
    @_default_form_builder ||= nil
  end
end

def logger
  controller.logger if controller.respond_to?(:logger)
end

def respond_to?(method_name, include_private = false)
  return controller.respond_to?(method_name) if CONTROLLER_DELEGATES.include?(method_name.to_sym)
  super
end