邮件助手在Rails 3中

Question

I'm trying to get the following code:

module ApplicationHelper
  def make_email(full_name, email_name)
    @email = full_name + " <" + email_name + "@" + DOMAIN + ">"
  end
end

to be seen inside my Mailer (ActionMailer class). I understand from here http://edgeguides.rubyonrails.org/action_mailer_basics.html#using-action-mailer-helpers that this should work, however the mailer can't actually see the function, and I get an undefined error.

What am I doing wrong/what could I do better?

Answer 1

It says ActionMailer inherits from AbstractController . In a regular controller (eg standard example PostsController ) you can't access methods from PostsHelper or ApplicationHelper without explicitly including the helper in your controller. Eg By default you cannot use link_to inside a controller.

So, if you want to use this method inside your Mailer class, you need to include ApplicationHelper .