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need to wrap a existing controller method

Added by Arnauld NYAKU at 2011-12-07 04:46 pm

I try this .

 1module UserLandingPageWelcomeControllerPatch
 2  def self.included(base) # :nodoc:
 3    base.send(:include, InstanceMethods)
 4
 5    base.class_eval do
 6      unloadable
 7      alias_method_chain :index, :redirect
 8    end
 9  end
10end
11
12module InstanceMethods
13    # Adds a rates tab to the user administration page
14    def index_with_redirect
15       redirect_to 'http://mine.local/projects/arnauld-test-1/wiki'
16    end
17end
18
19WelcomeController.send(:include, UserLandingPageWelcomeControllerPatch)

and i get error below

#     File     Line     Location
0     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     466     in `load_missing_constant'
1     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     106     in `const_missing'
2     /home/arnauld.nyaku/Applications/mine/app/helpers/application_helper.rb     21     
3     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
4     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
5     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     291     in `require_or_load'
6     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     250     in `depend_on'
7     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     162     in `require_dependency'
8     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/actionpack-2.3.14/lib/action_controller/helpers.rb     197     in `default_helper_module!'
9     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/actionpack-2.3.14/lib/action_controller/helpers.rb     212     in `__send__'
10     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/actionpack-2.3.14/lib/action_controller/helpers.rb     212     in `inherited'
11     /home/arnauld.nyaku/Applications/mine/app/controllers/application_controller.rb     18     
12     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
13     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
14     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     291     in `require_or_load'
15     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     451     in `load_missing_constant'
16     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     106     in `const_missing'
17     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     118     in `const_missing'
18     /home/arnauld.nyaku/Applications/mine/app/controllers/welcome_controller.rb     15     
19     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
20     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
21     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     291     in `require_or_load'
22     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     451     in `load_missing_constant'
23     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     106     in `const_missing'
24     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     118     in `const_missing'
25     /home/arnauld.nyaku/Applications/mine/vendor/plugins/chiliproject_user_landing_page/lib/user_landing_page_welcome_controller_patch.rb     23     
26     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
27     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/dependencies.rb     184     in `require'
28     /home/arnauld.nyaku/Applications/mine/vendor/plugins/chiliproject_user_landing_page/init.rb     9     in `evaluate_init_rb'
29     /home/arnauld.nyaku/Applications/mine/vendor/plugins/chiliproject_user_landing_page/init.rb     7     in `foreach'
30     /home/arnauld.nyaku/Applications/mine/vendor/plugins/chiliproject_user_landing_page/init.rb     7     in `evaluate_init_rb'
31     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/rails/plugin.rb     158     in `evaluate_init_rb'
32     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/activesupport-2.3.14/lib/active_support/core_ext/kernel/reporting.rb     11     in `silence_warnings'
33     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/rails/plugin.rb     154     in `evaluate_init_rb'
34     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/rails/plugin.rb     48     in `load'
35     /home/arnauld.nyaku/Applications/mine/config/../vendor/plugins/engines/lib/engines/plugin.rb     45     in `load'
36     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/rails/plugin/loader.rb     38     in `load_plugins'
37     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/rails/plugin/loader.rb     37     in `each'
38     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/rails/plugin/loader.rb     37     in `load_plugins'
39     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/initializer.rb     369     in `load_plugins'
40     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/initializer.rb     165     in `process'
41     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/initializer.rb     113     in `send'
42     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352@mine/gems/rails-2.3.14/lib/initializer.rb     113     in `run'
43     /home/arnauld.nyaku/Applications/mine/config/environment.rb     39     
44     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     222     in `require'
45     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     222     in `preload_application'
46     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     181     in `initialize_server'
47     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/utils.rb     572     in `report_app_init_status'
48     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     174     in `initialize_server'
49     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb     204     in `start_synchronously'
50     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb     180     in `start'
51     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     149     in `start'
52     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     219     in `spawn_rails_application'
53     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb     132     in `lookup_or_add'
54     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     214     in `spawn_rails_application'
55     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb     82     in `synchronize'
56     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb     79     in `synchronize'
57     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     213     in `spawn_rails_application'
58     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     132     in `spawn_application'
59     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     275     in `handle_spawn_application'
60     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb     357     in `__send__'
61     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb     357     in `server_main_loop'
62     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb     206     in `start_synchronously'
63     /home/arnauld.nyaku/.rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/helper-scripts/passenger-spawn-server     99

Anyone has any clue about this?
Thks


Replies (2)

RE: need to wrap a existing controller method - Added by Felix Schäfer at 2011-12-07 06:21 pm

The InstanceMethod module must be define in the same module in which you define self.included, something like that:

 1module UserLandingPageWelcomeControllerPatch
 2  def self.included(base) # :nodoc:
 3    base.send(:include, InstanceMethods)
 4
 5    base.class_eval do
 6      unloadable
 7      alias_method_chain :index, :redirect
 8    end
 9  end
10
11  module InstanceMethods
12    # Adds a rates tab to the user administration page
13    def index_with_redirect
14      redirect_to 'http://mine.local/projects/arnauld-test-1/wiki'
15    end
16  end
17end
18
19WelcomeController.send(:include, UserLandingPageWelcomeControllerPatch)

(I haven't tried it though, so there might be other problems…)

RE: need to wrap an existing controller method - Added by Arnauld NYAKU at 2011-12-07 11:05 pm

Thk Felix Schäfer.
I fixed the error.

module WelcomeControllerPatch
    def self.included(base) # :nodoc:
      base.send(:include, InstanceMethods)
      base.class_eval do
        unloadable
        alias_method_chain :index, :redirect
      end    
    end
    module InstanceMethods
      def index_with_redirect
        redirect_to a_url
      end
    end
  end
  require 'dispatcher'
  Dispatcher.to_prepare do
    WelcomeController.send(:include, WelcomeControllerPatch)
  end

(1-2/2)