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-rw-r--r--activerecord/lib/active_record/attribute_methods/dirty.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb
index 3de6fe566d..7224f970e0 100644
--- a/activerecord/lib/active_record/attribute_methods/dirty.rb
+++ b/activerecord/lib/active_record/attribute_methods/dirty.rb
@@ -114,7 +114,7 @@ module ActiveRecord
# Alias for +changed+
def changed_attribute_names_to_save
- changes_to_save.keys
+ mutations_from_database.changed_attribute_names
end
# Alias for +changed_attributes+