StimulusReflex working with route constraints

reflex.rb

# frozen_string_literal: true

class StimulusReflex::Reflex
  ...
  
  def request
    @request ||= begin        
      uri = URI.parse(url)
      path = ActionDispatch::Journey::Router::Utils.normalize_path(uri.path)
      query_hash = Rack::Utils.parse_nested_query(uri.query)
      origin = connection.env["HTTP_ORIGIN"]
      hostname = URI.parse(origin).host

      env = connection.env.merge(
        Rack::MockRequest.env_for(uri.to_s).merge(
          "HTTP_COOKIE" => connection.env["HTTP_COOKIE"],
          "HTTP_HOST" => hostname,
          "SERVER_NAME" => hostname,
          "REMOTE_ADDR" => connection.env["REMOTE_ADDR"],
          "HTTP_X_FORWARDED_FOR" => connection.env["HTTP_X_FORWARDED_FOR"],
          "rack.request.query_hash" => query_hash,
          "rack.request.query_string" => uri.query,
          "ORIGINAL_SCRIPT_NAME" => "",
          "ORIGINAL_FULLPATH" => path,
          Rack::SCRIPT_NAME => "",
          Rack::PATH_INFO => path,
          Rack::REQUEST_PATH => path,
          Rack::QUERY_STRING => uri.query,
        )
      )

      req = Rails.application.routes.send(:make_request, env)

      path_params = Rails.application.routes.recognize_path_with_request(req, path, {})    

      req = ActionDispatch::Request.new(
        env.merge(
          ActionDispatch::Http::Parameters::PARAMETERS_KEY => path_params
        )
      )
      req.session = connection.request.session.rack_session
      req.session.send :load!

      req
    end
  end

  ...
end