Allow delivery method options to be set per mail instance

[asanghi]

There is a common use case where mail settings are dynamic based on settings saved in database. For example, we could let companies provide us with their SMTP credentials which can be used to send email on their behalf. My particular use case dealt with creating a delivery method which sends SMSes based on company's credentials to company's users.

This PR allows the user to easily set delivery method settings from within the mail instance

class MySmsMailer < ActionMailer::Base
  def send_sms(company,telephone_number,message)
    mail :to => telephone_number, 
         :body => message, 
         :delivery_method => :sms_sender, 
         :delivery_method_options => company.sms_credentials
  end
end

or

class UserMailer < ActionMailer::Base
  def campaign_blast(company,telephone_number,message)
    mail :to => telephone_number, 
         :body => message, 
         :delivery_method_options => {:username => company.smtp_user, 
                                      :password => company.smtp_password}
  end
end

The alternative to doing this would be rather ugly

m = MySmsMailer.send_sms(company,number,message)
m.delivery_method.some_method_that_sets_options_on_sms_sender_instance(company.sms_credentials)
m.deliver

We could try to set delivery options by resetting them on classes but I dont imagine it would be threadsafe to do that!

/cc @josevalim @mikel

[asanghi]

@josevalim views? thoughts?

[asanghi]

another gentle nudge /cc @josevalim

[asanghi]

@josevalim squashed and fixed as per your input.

[saurabhnanda]

Is this patch available in Rails 3.1.1 ?

[asanghi]

No it is not. It is also not available on 3.2.x branch. This has been merged only on Rails 4.0

Rails 3.2.x and below are not accepting new features anymore.

[saurabhnanda]

Bad. I'm looking for exactly this right now. What would be the best way to
integrate what this patch is doing with the queueing ability provided by
http://code.google.com/p/mail-queue/ ?

On Thu, Oct 4, 2012 at 12:13 PM, Aditya Sanghi notifications@github.comwrote:

No it is not. It is also not available on 3.2.x branch. This has been
merged only on Rails 4.0

Rails 3.2.x and below are not accepting new features anymore.

—
Reply to this email directly or view it on GitHubhttps://github.com//pull/7397#issuecomment-9132092.

http://www.saurabhnanda.com

[steveklabnik]

You can fork rails, apply the patch yourself, then use bundler to use your fork.

[steveklabnik]

@saurabhnanda I've written up a how-to here: http://blog.steveklabnik.com/posts/2012-10-04-run-rails-with-custom-patches

[lulalala]

@asanghi If I use sendmail, will delivery_method_options be referring to sendmail_settings?

[asanghi]

Yes. @lulalala if the delivery_method is set to :sendmail then it refers to sendmail_settings.