I have trying to access helper methods from a rails 3 mailer in order to access the current user for the session.
I put the helper :application in my mailer class,
Josh Pinter's answer is correct, but I discovered that it is not necessary.
What is necessary is to name the helper correctly.
NotificationMailerHelper
is correct. NotificationMailersHelper
(note the s) is not correct.
The class and filename of the helper must match and be correctly spelled.
Rails 3.2.2