diff options
Diffstat (limited to 'django')
| -rw-r--r-- | django/db/models/base.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/django/db/models/base.py b/django/db/models/base.py index 2ca6f3ecc2..a9d8695f21 100644 --- a/django/db/models/base.py +++ b/django/db/models/base.py @@ -768,6 +768,8 @@ class Model(six.with_metaclass(ModelBase)): return getattr(self, cachename) def prepare_database_save(self, unused): + if self.pk is None: + raise ValueError("Unsaved model instance %r cannot be used in an ORM query." % self) return self.pk def clean(self): |