Possible to do an `in` `lookup_type` through the django-filter URL parser?

For better or worse, I created a custom filter for this:

class IntegerListFilter(django_filters.Filter):
    def filter(self,qs,value):
        if value not in (None,''):
            integers = [int(v) for v in value.split(',')]
            return qs.filter(**{'%s__%s'%(self.name, self.lookup_type):integers})
        return qs

Which is used like:

class MyFilter(django_filters.FilterSet):   
    ids = IntegerListFilter(name='id',lookup_type='in')
    class Meta:
        model = MyModel
        fields = ('ids',)

class MyModelViewSet(viewsets.ModelViewSet):
    queryset = MyModel.objects.all()
    serializer_class = MyModelSerializer
    filter_class = MyFilter

Now my interface accepts comma-delimited lists of integers.

I know this is an old post, but there is now a better solution. The change that makes it correct is posted here.

They added a BaseInFilter and a BaseRangeFilter. The documentation is here.

Big picture, BaseFilter checks for CSV, and then when mixed with another filter it does what you are asking. Your code can now be written like:

class NumberInFilter(filters.BaseInFilter, filters.NumberFilter):
    pass

class MyModelViewSet(viewsets.ModelViewSet):
    ids = NumberInFilter(name='id', lookup_expr='in')

    class Meta:
        model = MyModel
        fields = ['ids']