Use AR callbacks instead of observers (removed in Rails4) for notifications.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12021 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -98,6 +98,7 @@ class Issue < ActiveRecord::Base
   # Should be after_create but would be called before previous after_save callbacks
   after_save :after_create_from_copy
   after_destroy :update_parent_attributes
+  after_create :send_notification
 
   # Returns a SQL conditions string used to find all issues visible by the specified user
   def self.visible_condition(user, options={})
@@ -1516,6 +1517,12 @@ class Issue < ActiveRecord::Base
     end
   end
 
+  def send_notification
+    if Setting.notified_events.include?('issue_added')
+      Mailer.deliver_issue_add(self)
+    end
+  end
+
   # Query generator for selecting groups of issue counts for a project
   # based on specific criteria
   #