module ActionDispatchJourneyRouterWithFiltering
  def find_routes(env)
    path = env.is_a?(Hash) ? env['PATH_INFO'] : env.path_info
    filter_parameters = {}
    original_path = path.dup

    @routes.filters.run(:around_recognize, path, env) do
      filter_parameters
    end

    super(env).map do | route|
      env.parameters.merge(filter_parameters)
      [ route ]
    end.tap do |route|
      # restore the original path
      if env.is_a?(Hash)
        env['PATH_INFO'] = original_path
      else
        env.path_info = original_path
      end
    end
  end
end

ActionDispatch::Journey::Router.send(:prepend, ActionDispatchJourneyRouterWithFiltering)