How to safely delete in Django?

Question

Django

Please tell me how to implement safe deletion in Django. It is necessary for me that it would not be possible to delete the object if there is at least one connection with another object. For example

Remove user.model.verbose_name?
Are you sure you want to delete user.model.verbose_name "[email protected]"? All of the following related objects will also be removed:
User.model.verbose_name: [email protected] Log
entry: Changed "[email protected]" - Changed password.
Log Entry: Changed "[email protected]" - Changed password.
Log Entry: Removed "[email protected]"
Log Entry: Removed "[email protected]"
Log Entry: Removed "[email protected]"
Log Entry: Removed "[email protected]"

now this should not be deleted due to the fact that there is some kind of connection.

Answer 1

See ForeignKey.on_delete , you need to put on_delete=models.PROTECT in the foreign key field.