Adds a "Copied from/to" relation when copying issue(s) (#6899).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10491 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -1011,11 +1011,20 @@ class Issue < ActiveRecord::Base
     end
   end
 
-  # Copies subtasks from the copied issue
+  # Callback for after the creation of an issue by copy
+  # * adds a "copied to" relation with the copied issue
+  # * copies subtasks from the copied issue
   def after_create_from_copy
-    return unless copy?
+    return unless copy? && !@after_create_from_copy_handled
 
-    unless @copied_from.leaf? || @copy_options[:subtasks] == false || @subtasks_copied
+    if @copied_from.project_id == project_id || Setting.cross_project_issue_relations?
+      relation = IssueRelation.new(:issue_from => @copied_from, :issue_to => self, :relation_type => IssueRelation::TYPE_COPIED_TO)
+      unless relation.save
+        logger.error "Could not create relation while copying ##{@copied_from.id} to ##{id} due to validation errors: #{relation.errors.full_messages.join(', ')}" if logger
+      end
+    end
+
+    unless @copied_from.leaf? || @copy_options[:subtasks] == false
       @copied_from.children.each do |child|
         unless child.visible?
           # Do not copy subtasks that are not visible to avoid potential disclosure of private data
@@ -1031,8 +1040,8 @@ class Issue < ActiveRecord::Base
           logger.error "Could not copy subtask ##{child.id} while copying ##{@copied_from.id} to ##{id} due to validation errors: #{copy.errors.full_messages.join(', ')}" if logger
         end
       end
-      @subtasks_copied = true
     end
+    @after_create_from_copy_handled = true
   end
 
   def update_nested_set_attributes