module ActionController::Railties::Paths

def self.with(app)
  Module.new do
    define_method(:inherited) do |klass|
      super(klass)
      if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
        paths = namespace._railtie.paths["app/helpers"].existent
      else
        paths = app.config.helpers_paths
      end
      klass.helpers_path = paths
      if klass.superclass == ActionController::Base && ActionController::Base.include_all_helpers
        klass.helper :all
      end
    end
  end
end