diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute_mutation_tracker.rb')
-rw-r--r-- | activerecord/lib/active_record/attribute_mutation_tracker.rb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_mutation_tracker.rb b/activerecord/lib/active_record/attribute_mutation_tracker.rb index ba7348918b..0133b4d0be 100644 --- a/activerecord/lib/active_record/attribute_mutation_tracker.rb +++ b/activerecord/lib/active_record/attribute_mutation_tracker.rb @@ -46,6 +46,8 @@ module ActiveRecord end class NullMutationTracker # :nodoc: + include Singleton + def changed_values {} end |