raise_generation_error

# File actionpack/lib/action_dispatch/routing/route_set.rb, line 207
            def raise_generation_error(args)
              parts, missing_keys = [], []

              @path_parts.zip(args) do |part, arg|
                parameterized_arg = arg.to_param

                if parameterized_arg.nil? || parameterized_arg.empty?
                  missing_keys << part
                end

                parts << [part, arg]
              end

              message = "No route matches #{Hash[parts].inspect}"
              message << " missing required keys: #{missing_keys.inspect}"

              raise ActionController::UrlGenerationError, message
            end