Using user foreign key to settings.AUTH_USER_MODEL instead of "username" in User_Keys

[oussjarrousse]

Currently the User_Keys model in models.py, uses username=models.CharField(max_length = 50).

This could be problematic in case the django app allows for changing the username for example. Also deleting a user will not result in deleting entries for that user in the User_Keys model in the database.

The mainstream approach is to use:

user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)

The request in django view functions already have request.user variable that can be used directly when CRUD an entry in the User_Keys table.

Nonetheless, changing the data model will require a lot of refactoring.