Rails 3.1: Better way to expose an engine's helper within the client app

Question

I have found a few articles addressing the issue of helpers within an engine not being accessible to the consuming (parent) application. To make sure we are all on the same

Answer 1

module YourEngine
  module Helpers
    def a_helper
    end

    ...
  end
end

ActionController::Base.send(:helper, YourEngine::Helpers)