There is a problem with Models which have primary key with default=uuid
id = models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True)
The initial/first field history value is not saved to database.
It is caused by is_new_object = instance.pk is None in tracker.py
This approach has a problem:
In the save method, self.pk will never be None when default=uuid.uuid is set.
A large number of django users (and a lot of non-official django tutorials) believe that checking self.pk in the save method is a safe way to detect and decide whether an instance of a model is new or not.
Hi.
There is a problem with Models which have primary key with default=uuid
The initial/first field history value is not saved to database. It is caused by
is_new_object = instance.pk is Nonein tracker.pyThis approach has a problem: In the save method, self.pk will never be None when default=uuid.uuid is set.
A large number of django users (and a lot of non-official django tutorials) believe that checking self.pk in the save method is a safe way to detect and decide whether an instance of a model is new or not.
No its not. The safe way to detect and decide whether an instance of a model is new or not is to use self._state object https://docs.djangoproject.com/en/3.2/ref/models/instances/#state
So I think you should switch from
is_new_object = instance.pk is Nonetois_new_object = instance._state.adding