FieldTracker raises AttributeError for __delete__ when attempting to refresh a model field

[acardnell-intruder]

Problem

According to the Django documentation, you should be able to refresh a model field with the following syntax:

>>> obj = MyModel.objects.first()
>>> del obj.field
>>> obj.field  # Loads the field from the database

However, models that have a FieldTracker assigned will raise an AttributeError for __delete__ instead.

As workaround you can refresh the instance with:

>>>obj.refresh_from_db(fields=['field_name'])

Environment

• Django Model Utils version: 4.2.0
• Django version: 3.2.13
• Python version: 3.10.4