before_action for specific controller

Question

class ApplicationController < ActionController::Base
      before_action :test, only: [:index]

      def test
          ap 'test'
      end
    end

The above is run before every single index action, be it dogs#index or cats#index or rabbits#index. How should I get it to execute just before cats#index and rabbits#index?

I want to test to be exectuted before actions in many controllers.

Answer 1

You can skip this method:

class ApplicationController < ActionController::Base
  before_action :test, only: [:index]

  def test
    p 'test'
  end
end

class DogsController < ApplicationController
  skip_before_action :test
end

Answer 2

Just move your call into the controller you want it to run in.

class ApplicationController < ActionController::Base
  # nothing here!

  def test
    # ...
  end
end

class CatsController < ApplicationController
  before_action :test, only: [:index]
end

class RabbitsController < ApplicationController
  before_action :test, only: [:index]
end