padrino/padrino-framework · error · Padrino::Routing::UnrecognizedException

Route mapping for url(#{name.inspect}) could not be found

Error message

Route mapping for url(#{name.inspect}) could not be found

What it means

Error "Route mapping for url(#{name.inspect}) could not be found" thrown in padrino/padrino-framework.

Source

Thrown at padrino-core/lib/padrino-core/application/routing.rb:434

        @original_instance.each do |key, value|
          instance_variable_set(key, value)
        end
      end

      # Sets instance variable by name and saves the original value in @original_instance hash
      def replace_instance_variable(name, value)
        @original_instance ||= {}
        @original_instance[name] = instance_variable_get(name)
        instance_variable_set(name, value)
      end

      # Searches compiled router for a path responding to args and makes a path with params.
      def make_path_with_params(args, params)
        names, params_array = args.partition { |arg| arg.is_a?(Symbol) }
        name = names[0, 2].join(' ').to_sym
        compiled_router.path(name, *(params_array << params))
      rescue PathRouter::InvalidRouteException
        raise Padrino::Routing::UnrecognizedException, "Route mapping for url(#{name.inspect}) could not be found"
      end

      # Parse params from the url method
      def value_to_param(object)
        case object
        when Array
          object.map { |item| value_to_param(item) }.compact
        when Hash
          object.each_with_object({}) do |(key, value), all|
            next all if value.nil?
            all[key] = value_to_param(value)
          end
        when NilClass
          nil
        else
          object.respond_to?(:to_param) ? object.to_param : object
        end
      end

View on GitHub (pinned to 167044f3d5)

When it happens

Trigger: Thrown at padrino-core/lib/padrino-core/application/routing.rb:434 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of padrino/padrino-framework@167044f3d5 (2026-08-23). Data as JSON: /api/errors/13a0bf7f718f44aa. Report an issue: GitHub.