gistfile1.rb

class ActionController::Routing::RouteSet
  def load_routes_with_clearance!
    clearance_routes = File.join(File.dirname(__FILE__), 
                       *%w[.. config clearance_routes.rb])
    unless configuration_files.include? clearance_routes
      add_configuration_file(clearance_routes)
    end
    load_routes_without_clearance!
  end

  alias_method_chain :load_routes!, :clearance
end