Django过滤器__在查找中

Question

class ProductFilter(django_filters.FilterSet):

    label = django_filters.LookupChoiceFilter(
        lookup_choices=[
            ('contains', 'Contains'),
            ('in', 'In')
        ]
    )

    class Meta:
        model = Product
        fields = ['label']

class ListProduct(generics.ListAPIView):
    queryset = Product.objects.all()
    serializer_class = ProductSerializer
    filter_backends = (django_filters.rest_framework.DjangoFilterBackend,)
    filter_class = ProductFilter

“ http://localhost:8000/api?label=foo&label_lookup=contains” 工作正常，但 “ http://localhost:8000/api?label=foo,bar&label_lookup=in” 返回一个空列表。我希望它返回所有包含'foo'或'bar'的记录。

我尝试了不同的方法，但无法使其起作用。有解决办法吗？