Notes posted by AKovtunov

Only in ApplicationController

Seems like we can use helper_method only in ApplicationController. Even if we will create child controller, methods that will be created in child and listed in child’s helper_method will not be accessible from the view.

For example, we have

class SystemController < ApplicationController
 def important_method
   "I am important!"
 end
end

and

class BookController < SystemController
 def index
 end
end

And calling important_method from Book’s index view will raise an NoMethodError.