Some dangerous code

black-django.py

"""
This code contains some extreme levels of black magical Python code with abstractions that
your tiny brain just might not be able to comprehend. Read on if you dare to - otherwise
leave this file and never return. Consider yourself warned.

- mentix02, 2024-01-18
"""

from typing import Callable

from django.db import models


def generate_user_owned_model(*, related_name: str, on_delete: Callable = models.CASCADE) -> type[models.Model]:
    """
    Generates a model that is owned by a user via a foreign key. Use this by inheriting from this -

    >>> class MyModel(generate_user_owned_model(related_name='my_models')): pass

    Calling a function which returns a class and inhering from it from another class? That's right.

    As I said - black magic.
    """

    class _UserOwnerModel(models.Model):
        user = models.ForeignKey('user.User', related_name=related_name, on_delete=on_delete)

        class Meta:
            abstract = True

    return _UserOwnerModel