requirements

# File actionpack/lib/action_controller/resources.rb, line 72
      def requirements(with_id = false)
        @requirements   ||= @options[:requirements] || {}
        @id_requirement ||= { :id => @requirements.delete(:id) || /[^#{Routing::SEPARATORS.join}]+/ }

        with_id ? @requirements.merge(@id_requirement) : @requirements
      end