custom_controller.rb

class SubscriptorsController < ActionController::Metal
  ActionController::Base.without_modules(:Flash, :Cookies).each do |left|
    p left
    include left
  end

  include Rails.application.routes.url_helpers

  # Define some internal variables that should not be propagated to the view.
  PROTECTED_IVARS = AbstractController::Rendering::DEFAULT_PROTECTED_INSTANCE_VARIABLES + [
    :@_status, :@_headers, :@_params, :@_env, :@_response, :@_request,
    :@_view_runtime, :@_stream, :@_url_options, :@_action_has_layout ]

  def _protected_ivars # :nodoc:
    PROTECTED_IVARS
  end

  def self.protected_instance_variables
    PROTECTED_IVARS
  end

  ActiveSupport.run_load_hooks(:action_controller, self)

  # custom code here ....
end