[django-filter] DjangoFilterBackend is not recognized as BaseFilterBackend | BaseFilterProtocol

[H4rryK4ne]

@intgr @huynguyengl99

In my ViewSet

class MyModelViewSetviewsets.GenericViewSet[MyModel], mixins.ListModelMixin):
    queryset = MyModel.objects.all()
    filter_backends = [DjangoFilterBackend, OrderingFilter]

I get the error:

error: List item 0 has incompatible type "type[DjangoFilterBackend]"; expected "type[BaseFilterBackend] | type[BaseFilterProtocol[MachineNCFileCalculated]]"  [list-item]

[huynguyengl99]

Thanks for the report, I will take a look on that

[huynguyengl99]

I'm creating a small fix for this. However, due to some differences between the drf-stubs and django-filter implementations, I need to wait for the drf-stubs maintainer to accept my suggestion to remove the deprecated functions that have already been removed in django-filter.

So, let's wait for that. More info here: typeddjango/djangorestframework-stubs#808

[intgr]

Released djangorestframework-stubs 3.16.2 with the fix

[intgr]

Did that solve this issue -- or does this need any changes to types-django-filter as well?

[huynguyengl99]

I tested the example and it works (on my machine). Let's see if it works for @H4rryK4ne , too. I think there’s no need to update types-django-filter.

[H4rryK4ne]

Yep, djangorestframework-stubs 3.16.2 fixed the issue.