Filter with URL /?date__isnull=true is not working.

[Natgho]

Filter with URL /?date__isnull=true is not working.

I created the modelviewset;

class ABC(Model):
    closed_at= models.DateTimeField()

class ABC(viewsets.ModelViewSet):
    serializer_class = ABCSerializer
    queryset = ABC.objects.all()
    filter_backends = [DjangoFilterBackend]

and send to request for filtering;
/?sample_other_filter=83&closed_at__isnull=true

and I saw the queryset is not adding "null check", after when I created to FilterSet manually, it is worked. But it seems, default filter generation is not working properly for DateTimeField.

[carltongibson]

Did you read the tips on filtering for isnull?

https://django-filter.readthedocs.io/en/stable/guide/tips.html#filter-and-lookup-expression-mismatch-in-range-isnull

[Natgho]

Yes, but why not include these filters by default? __isnull, __gt etc. ?

[carltongibson]

Every filter added expands the surface area of the API, it's a balance.

This isn't a change I'm going to make.