Unable resolve mailer class different to pattern name.gsub(/Delivery$/, "Mailer")

[Alexey]

I faced with problem when I need to notify by email several recipients with different content. So I have several Action Mailer classes for that. But I couldn't find a way how to explicitly set mailer class when I'm registering the line. It would be great to have it on the same way how we do it with ActiveDelivery::Lines::Notifier:

  register_line :merchant, ActiveDelivery::Lines::Notifier,
    resolver: ->(name) { Notifications::MerchantMailer }

To have it working - I added CustomMailer class:

module DeliveryLines
  class CustomMailer < ActiveDelivery::Lines::Notifier
    alias mailer_class handler_class

    def notify?(method_name)
      mailer_class.action_methods.include?(method_name.to_s)
    end

    def notify_now(mailer, mid, *args)
      mailer.public_send(mid, *args).deliver_now
    end

    def notify_later(mailer, mid, *args)
      mailer.public_send(mid, *args).deliver_later
    end
  end
end

It works good to me. But probably having ability to set resolver for ActiveDelivery::Lines::Mailer class on the same way how we have it at ActiveDelivery::Lines::Notifier is a good idea for improvement?

[Vladimir Dementyev]

having ability to set resolver for ActiveDelivery::Lines::Mailer class on the same way how we have it at ActiveDelivery::Lines::Notifier is a good idea for improvement?

Sounds like a good idea to me. We can go even further and move the resolving logic to ActiveDelivery::Lines::Base (I mean, #resolve_class method and resolver option).

Would you like to propose a PR?

[Alexey]

Yep, I'll send PR. Thanks!