NoMethodError when trying to invoke helper method from Rails controller
ruby, ruby-on-rails
Solution
`helper :all` makes all the helpers (yes, all of them) available in the views, it does not include them into the controller.
If you wish to share some code between helper and controller, which is not very desirable because helper is UI code and controller is, well, controller code, you can either include the helper in the controller, or create a separate module and include that in the controller and the helper as well.
Problem
I'm getting a `NoMethodError` when trying to access a method defined in one of my helper modules from one of my controller classes. My Rails application uses the `helper` class method with the `:all` symbol as shown below: ``` class ApplicationController < ActionController::Base helper :all . . end ``` My understanding is that this should make all of my controller classes automatically include all of the helper modules within the app/helpers directory, therefore mixing in all of the methods into the controllers. Is this correct? If I explicitly `include` the helper module within the controller then everything works correctly.