Use the id field as project_key in ProjectCustomField#visibility_by_project_condition by default (#29161).

Patch by Holger Just.


git-svn-id: http://svn.redmine.org/redmine/trunk@17517 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/project_custom_field.rb

@@ -19,4 +19,9 @@ class ProjectCustomField < CustomField
   def type_name
     :label_project_plural
   end
+
+  def visibility_by_project_condition(project_key=nil, user=User.current, id_column=nil)
+    project_key ||= "#{Project.table_name}.id"
+    super(project_key, user, id_column)
+  end
 end