Rails + Devise + delayed_job?

Question

I have a Rails 3 App using Devise on Heroku. Problem is I\'m sending emails with Sendgrid and email delivery is slow, it makes the app hang. So I\'m interested in using dela

Answer 1

I'm not sure Devise provides an easy way to do backgrounding of email delivery. However there are ways to be able to do that with DelayedJoy. DelyedJob provides a function "handle_asynchronously" which if injected into the DeviseMailer can ensure that deliveries happen in the background.

Try this in your config/application.rb

config.after_initialize do 
  ::DeviseMailer.handle_asynchronously :deliver_confirmation_instructions 
  # or
  ::DeviseMailer.handle_asynchronously :deliver!
end

You will need to experiment with that. You could also try to inherit the DeviseMailer and set it to deliver asynchronously in an initializer in config/initializer/devise_mailer_setup.rb or something to that effect.