vendor/rails/railties/doc/guides/source/creating_plugins/controllers.txt

   1 == Add a controller ==
   2
   3 This section describes how to add a controller named 'woodpeckers' to your plugin that will behave the same as a controller in your main app.  This is very similar to adding a model.
   4
   5 You can test your plugin's controller as you would test any other controller:
   6
   7 *vendor/plugins/yaffle/yaffle/woodpeckers_controller_test.rb:*
   8
   9 [source, ruby]
  10 ----------------------------------------------
  11 require File.dirname(__FILE__) + '/test_helper.rb'
  12 require 'woodpeckers_controller'
  13 require 'action_controller/test_process'
  14
  15 class WoodpeckersController; def rescue_action(e) raise e end; end
  16
  17 class WoodpeckersControllerTest < Test::Unit::TestCase
  18   def setup
  19     @controller = WoodpeckersController.new
  20     @request = ActionController::TestRequest.new
  21     @response = ActionController::TestResponse.new
  22   end
  23
  24   def test_index
  25     get :index
  26     assert_response :success
  27   end
  28 end
  29 ----------------------------------------------
  30
  31 This is just a simple test to make sure the controller is being loaded correctly.  After watching it fail with `rake`, you can make it pass like so:
  32
  33 *vendor/plugins/yaffle/lib/yaffle.rb:*
  34
  35 [source, ruby]
  36 ----------------------------------------------
  37 %w{ models controllers }.each do |dir|
  38   path = File.join(File.dirname(__FILE__), 'app', dir)
  39   $LOAD_PATH << path
  40   ActiveSupport::Dependencies.load_paths << path
  41   ActiveSupport::Dependencies.load_once_paths.delete(path)
  42 end
  43 ----------------------------------------------
  44
  45
  46 *vendor/plugins/yaffle/lib/app/controllers/woodpeckers_controller.rb:*
  47
  48 [source, ruby]
  49 ----------------------------------------------
  50 class WoodpeckersController < ActionController::Base
  51
  52   def index
  53     render :text => "Squawk!"
  54   end
  55
  56 end
  57 ----------------------------------------------
  58
  59 Now your test should be passing, and you should be able to use the Woodpeckers controller in your app.  If you add a route for the woodpeckers controller you can start up your server and go to http://localhost:3000/woodpeckers to see your controller in action.