About Preserving Entries Related to Deleted Users
If you need to preserve items in the database, even when related users are deleted, use this patern:
from django.contrib.auth import User
User = get_user_model()
def get_sentinel_user():
return User.objects.get_or_create(username="DELETED_USER")[0]
class Payment(models.Model):
user = models.ForeignKey(
User,
on_delete=models.SET(get_sentinel_user)
)
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