Compatibility: Set cost_object to nil on issue move if the current cost object would be invalid in the new issue location

git-svn-id: https://dev.finn.de/svn/cockpit/trunk@536 7926756e-e54e-46e6-9721-ed318f58905e

lib/costs_issue_observer.rb

@@ -6,5 +6,12 @@ class CostsIssueObserver < ActiveRecord::Observer
       CostEntry.update_all({:project_id => issue.project_id}, {:issue_id => id})
     end 
   end
+  
+  def before_update(issue)
+    # FIXME: remove this method once controller_issues_move_before_save is in 0.9-stable
+    if issue.project_id_changed? && issue.cost_object_id && !issue.project.cost_object_ids.include?(issue.cost_object_id)
+      issue.cost_object = nil
+    end
+  end
 end