Tips on using with Devise

[andrewhavens]

I would like to style my Devise email templates using the same layout that is used by the other emails in my application, but in order to do this, I will need to call the make_bootstrap_mail method from within the Devise::Mailer class somehow. I think there are a few different ways to achieve this, but I'm curious if anyone else has dealt with this before and how did you do it?

[swrobel]

If you come up with a clever solution, I'd love to hear it!

[andrewhavens]

This is the solution I came up with (updated to use part of @aaronchi's code below):

1. Generate a new mailer class: bin/rails g mailer UserMailer

2. Update your new mailer class with this:

   class UserMailer < Devise::Mailer
     layout 'bootstrap-mailer'
     default template_path: 'devise/mailer'
   
     def devise_mail(record, action, opts = {}, &block)
       initialize_from_record(record)
       make_bootstrap_mail headers_for(action, opts), &block
     end
   end

3. Update the mailer config setting in config/initializers/devise.rb:

   config.mailer = 'UserMailer'

4. Assuming you already generated the devise views (using rails g devise:views), the email templates live in app/views/devise/mailer

[aaronchi]

Monkey Patch:

module Devise
  module Mailers
    module Helpers
      # Bootstrap Email Override
      def devise_mail(record, action, opts = {}, &block)
        initialize_from_record(record)
        make_bootstrap_mail headers_for(action, opts), &block
      end
    end
  end
end

[WoodyDark]

I'd like to bring the discussion back to life in regards to using Devise with Bootstrap Email in Rails 6. I have a pretty similar setup as everyone here and followed @aaronchi's monkey patch. The one possible difference I made is that I added config.parent_mailer = 'ApplicationMailer' in devise.rb and now when I start my rails server, I get a deprecation warning. Does anyone know what this really means and how would I fix it? (or how did you guys fix it?)

DEPRECATION WARNING: Initialization autoloaded the constants Devise::Mailer, ApplicationHelper, and UserMailer.

Being able to do this is deprecated. Autoloading during initialization is going
to be an error condition in future versions of Rails.

Reloading does not reboot the application, and therefore code executed during
initialization does not run again. So, if you reload Devise::Mailer, for example,
the expected changes won't be reflected in that stale Class object.

These autoloaded constants have been unloaded.

# devise.rb

...
config.mailer = UserMailer
config.parent_mailer = 'ApplicationMailer'
...

# user_mailer.rb

class UserMailer < Devise::Mailer
  helper :application
  include Devise::Controllers::UrlHelpers
  ...
end