如何通过排除两个参数来过滤 Django 中的查询集

Question

I have a view in django that looks as follows:

class ExploreListingView(generics.ListAPIView):
    serializer_class = ListingSerializer
    permission_classes = [permissions.IsAuthenticated]

    def get_queryset(self):
        return Listing.objects.exclude(user=self.request.user, claimed=True)

The result I expect is to filter out any listings that are assigned with the current user and are claimed, however the filter doesn't work, but when I remove either parameter it works just fine. How do I exclude it so I can use more than one parameter.

Answer 1

事实证明，我所要做的就是链接排除方法Listing.objects.exclude(user=self.request.user).exclude(claimed=True)

Answer 2

Listing.objects.filter(user=self.request.user, claimed=True)

You select entries that field user is equal self.request.user and claimed is True

and you can use :

Listing.objects.filter(user=self.request.user).exclude(claimed=True)

both ways is worked but the first is clearly code.

Answer 3

By "AND(&)" operator:

from django.db.models import Q
    Listing.objects.filter(Q(user=self.request.user) & Q(claimed=True))