python - 在 drf 中使用带有 list_routes 的过滤器

Question

有没有一种方法可以像在 DRF 中为 Root View 集使用过滤器一样为 @list_route 使用过滤器？

我有一个模型，我已经为其配置了过滤器和我无法配置的详细路线:

class ListingViewSet(viewsets.ModelViewSet):
    # disable listing after 5 flags
    queryset = Listing.objects.all()

    serializer_class = ListingSerializer
    filter_backends = (DjangoFilterBackend, OrderingFilter, SearchFilter)
    permission_classes = (ListingOwnerCanEdit,)
    filter_class = ListingFilter

    @list_route()
    def homepage(self, request):
        queryset = Listing.objects.filter(flags__lt=5, closed=False)

        ### Doesn't work
        # filter_backends = (DjangoFilterBackend, OrderingFilter, SearchFilter)
        # permission_classes = (ListingOwnerCanEdit,)
        # filter_class = ListingFilter
        # ordering_filter = OrderingFilter()
        # ordering_fields = ('price', 'views')
        # search_fields = ('title', 'description')

        serializer = ListingSerializer(queryset, many=True, context=self.get_serializer_context())
        return Response(serializer.data)

ListingFilter 是:

class ListingFilter(django_filters.rest_framework.FilterSet):
    min_price = django_filters.NumberFilter(name="price", lookup_expr='gte')
    max_price = django_filters.NumberFilter(name="price", lookup_expr='lte')
    author_pk = django_filters.CharFilter(name='author_pk')

    class Meta:
        model = Listing
        fields = ['price_type', 'sale_type', 'category__name', 'min_price', 'max_price', 'description', 'title',
              'listing_date', 'views', 'number_of_inquiries', 'author_pk', 'closed', 'closing_date']

有没有办法在主页列表路由中使用 ListingFilter？

Answer 1

您应该在用@list_route 修饰的方法中调用filter_queryset:

@list_route()
def homepage(self, request):
    queryset = self.get_queryset().filter(flags__lt=5, closed=False)
    queryset = self.filter_queryset(queryset)

    serializer = ListingSerializer(queryset, many=True, context=self.get_serializer_context())
    return Response(serializer.data)

编辑:使用 self.get_queryset() 代替 Listing.objects 也是一个好主意。