method
helper_method
v1.1.6 -
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- Class:
ActionController::Helpers::ClassMethods
helper_method(*methods)public
Declare a controller method as a helper. For example,
helper_method :link_to def link_to(name, options) ... end
makes the link_to controller method available in the view.
1Note
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.
