[Django] TypeError : __init__() missing 1 required positional argument: 'on_delete' 에러

Django model에 foreignkey 설정을 하는 코드를 넣었더니 migration 할 때

TypeError: __init__() missing 1 required positional argument: 'on_delete' 

에러가 생겨서 알아본 결과,

on_delete를 설정해줘야 한다고 해서 했더니 에러가 고쳐졌당

출처 stackoverflow

You can change the property categorie of the class Article like this:

categorie = models.ForeignKey(
    'Categorie',
    on_delete=models.CASCADE,
)

and the error should disappear.

Eventually you might need another option for on_delete, check the documentation for more details:

https://docs.djangoproject.com/en/1.11/ref/models/fields/#django.db.models.ForeignKey

EDIT:

As you stated in your comment, that you don't have any special requirements for on_delete, you could use the option DO_NOTHING:

# ...
on_delete=models.DO_NOTHING,
# ...