Adds workflow copy functionality (#1727).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3154 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/role.rb

@@ -28,14 +28,8 @@ class Role < ActiveRecord::Base
   
   before_destroy :check_deletable
   has_many :workflows, :dependent => :delete_all do
-    def copy(role)
-      raise "Can not copy workflow from a #{role.class}" unless role.is_a?(Role)
-      raise "Can not copy workflow from/to an unsaved role" if proxy_owner.new_record? || role.new_record?
-      clear
-      connection.insert "INSERT INTO #{Workflow.table_name} (tracker_id, old_status_id, new_status_id, role_id)" +
-                        " SELECT tracker_id, old_status_id, new_status_id, #{proxy_owner.id}" +
-                        " FROM #{Workflow.table_name}" +
-                        " WHERE role_id = #{role.id}"
+    def copy(source_role)
+      Workflow.copy(nil, source_role, nil, proxy_owner)
     end
   end