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:
Arguments — Model field reference — Django documentation
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,
# ...