Django Rest Framework序列化程序中的聚合（和其他带注释的）字段

可能的解决方案：

views.py

class IceCreamCompanyViewSet(viewsets.ModelViewSet):    queryset = IceCreamCompany.objects.all()    serializer_class = IceCreamCompanySerializer    def get_queryset(self):        return IceCreamCompany.objects.annotate( total_trucks=Count('trucks'), total_capacity=Sum('trucks__capacity')        )

serializers.py

class IceCreamCompanySerializer(serializers.ModelSerializer):    total_trucks = serializers.IntegerField()    total_capacity = serializers.IntegerField()    class meta:        model = IceCreamCompany        fields = ('name', 'total_trucks', 'total_capacity')