instance method no_routes

# File actionpack/lib/action_dispatch/routing/inspector.rb, line 148
        def no_routes(routes, filter)
          @buffer <<
            if routes.none?
              <<~MESSAGE
                You don't have any routes defined!

                Please add some routes in config/routes.rb.
              MESSAGE
            elsif filter.key?(:controller)
              "No routes were found for this controller."
            elsif filter.key?(:grep)
              "No routes were found for this grep pattern."
            end

          @buffer << "For more information about routes, see the Rails guide: https://guides.rubyonrails.org/routing.html."
        end