diff options
Diffstat (limited to 'django')
| -rw-r--r-- | django/db/models/constraints.py | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/django/db/models/constraints.py b/django/db/models/constraints.py index 3859a60e2f..788e2b635b 100644 --- a/django/db/models/constraints.py +++ b/django/db/models/constraints.py @@ -690,11 +690,19 @@ class UniqueConstraint(BaseConstraint): queryset = queryset.exclude(pk=model_class_pk) if not self.condition: if queryset.exists(): - if self.fields: - # When fields are defined, use the unique_error_message() for - # backward compatibility. + if ( + self.fields + and self.violation_error_message + == self.default_violation_error_message + ): + # When fields are defined, use the unique_error_message() as + # a default for backward compatibility. + validation_error_message = instance.unique_error_message( + model, self.fields + ) raise ValidationError( - instance.unique_error_message(model, self.fields), + validation_error_message, + code=validation_error_message.code, ) raise ValidationError( self.get_violation_error_message(), |