How to add a before_filter in UserMailer which checks if it is OK to mail a user?

Question

is there a global way I can write a before_filter for my user mailer, that checks to see if the user has emails disabled? Right now every mailer I have checks the user's setting, this is very redundant. I would like to DRY this up by having a before_filter that works for all mailers.

class UserMailer < ActionMailer::Base   before_filter :check_if_we_can_mail_the_user   ....   private     def check_if_we_can_mail_the_user      if current_user.mail_me == true        #continue      else       Do something to stop the controller from continuing to mail out      end    end  end 

Possible? Has anyone done something like this? Thanks

Answer 1

Rails 4 already has before_filter and after_filter callbacks. For Rails 3 users, it's surprisingly simple to add them: just include AbstractController::Callbacks. This mimics the change to Rails 4 which apart from comments and tests, just included Callbacks.

class MyMailer < ActionMailer::Base   include AbstractController::Callbacks    after_filter :check_email    def some_mail_action(user)     @user = user     ...   end    private   def check_email     if @user.email.nil?       mail.perform_deliveries = false     end     true   end  end