Add support for customization by block to IssueCustomField.generate! (#31402).

Patch by Kouhei Sutou.


git-svn-id: http://svn.redmine.org/redmine/trunk@18179 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/object_helpers.rb

@@ -209,6 +209,7 @@ module ObjectHelpers
     super do |field|
       field.is_for_all = true unless attributes.key?(:is_for_all)
       field.tracker_ids = Tracker.all.ids unless attributes.key?(:tracker_ids) || attributes.key?(:trackers)
+      yield field if block_given?
     end
   end