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== Add a Custom Route ==

Testing routes in plugins can be complex, especially if the controllers are also in the plugin itself.  Jamis Buck showed a great example of this in http://weblog.jamisbuck.org/2006/10/26/monkey-patching-rails-extending-routes-2.

*vendor/plugins/yaffle/test/routing_test.rb*

[source, ruby]
--------------------------------------------------------
require "#{File.dirname(__FILE__)}/test_helper"

class RoutingTest < Test::Unit::TestCase

  def setup
    ActionController::Routing::Routes.draw do |map|
      map.yaffles
    end
  end

  def test_yaffles_route
    assert_recognition :get, "/yaffles", :controller => "yaffles_controller", :action => "index"
  end

  private

    # yes, I know about assert_recognizes, but it has proven problematic to
    # use in these tests, since it uses RouteSet#recognize (which actually
    # tries to instantiate the controller) and because it uses an awkward
    # parameter order.
    def assert_recognition(method, path, options)
      result = ActionController::Routing::Routes.recognize_path(path, :method => method)
      assert_equal options, result
    end
end
--------------------------------------------------------

*vendor/plugins/yaffle/init.rb*

[source, ruby]
--------------------------------------------------------
require "routing"
ActionController::Routing::RouteSet::Mapper.send :include, Yaffle::Routing::MapperExtensions
--------------------------------------------------------

*vendor/plugins/yaffle/lib/routing.rb*

[source, ruby]
--------------------------------------------------------
module Yaffle #:nodoc:
  module Routing #:nodoc:
    module MapperExtensions
      def yaffles
        @set.add_route("/yaffles", {:controller => "yaffles_controller", :action => "index"})
      end
    end
  end
end
--------------------------------------------------------

*config/routes.rb*

[source, ruby]
--------------------------------------------------------
ActionController::Routing::Routes.draw do |map|
  ...
  map.yaffles
end
--------------------------------------------------------

You can also see if your routes work by running `rake routes` from your app directory.