Allow users to configure the queue for the mailers

This allow the users to do:

    config.action_mailer.queue = MyQueue.new

and

    class UsersMailer < ActionMailer::Base
      self.queue = MyQueue.new
    end

2 files changed, 4 insertions, 5 deletions

diff --git a/actionmailer/lib/action_mailer/base.rb b/actionmailer/lib/action_mailer/base.rb
index 35ac0423a5..9cc00ca5a1 100644
--- a/actionmailer/lib/action_mailer/base.rb
+++ b/actionmailer/lib/action_mailer/base.rb
@@ -389,6 +389,8 @@ module ActionMailer #:nodoc:
       :parts_order  => [ "text/plain", "text/enriched", "text/html" ]
     }.freeze
 
+    class_attribute :queue
+
     class << self
       # Register one or more Observers which will be notified when mail is delivered.
       def register_observers(*observers)
@@ -486,11 +488,6 @@ module ActionMailer #:nodoc:
           super
         end
       end
-
-      def queue
-        Rails.queue
-      end
-
     end
 
     attr_internal :message
diff --git a/actionmailer/lib/action_mailer/railtie.rb b/actionmailer/lib/action_mailer/railtie.rb
index 8679096735..1fa689de5b 100644
--- a/actionmailer/lib/action_mailer/railtie.rb
+++ b/actionmailer/lib/action_mailer/railtie.rb
@@ -19,6 +19,8 @@ module ActionMailer
       options.javascripts_dir ||= paths["public/javascripts"].first
       options.stylesheets_dir ||= paths["public/stylesheets"].first
 
+      options.queue ||= app.queue
+
       # make sure readers methods get compiled
       options.asset_path          ||= app.config.asset_path
       options.asset_host          ||= app.config.asset_host