这是我的serilizer类:
class RankNewsChannelSerializers(serializers.ModelSerializer):
class Meta:
model = News_Channel
fields = ('id', 'name','total_star', 'total_user')
这是我的观点:
class NewsChannelRankApi(ListAPIView):
queryset = News_Channel.objects.order_by('-total_star').all()
serializer_class = RankNewsChannelSerializers
我得到的响应是根据total_stars
进行排序的,如下所示:
[
{
"id": 9,
"name": "The Hindu",
"total_star": 36,
"total_user": 5
},
{
"id": 1,
"name": "NDTV",
"total_star": 36,
"total_user": 5
},
{
"id": 10,
"name": "Firstpost",
"total_star": 35,
"total_user": 6
},
{
"id": 14,
"name": "DD News",
"total_star": 25,
"total_user": 4
}
]
但是我需要将响应按total_star/total_user
进行排序。
像这样是我无效的方法,但是它将使您大致了解我想要实现的目标。
class NewsChannelRankApi(ListAPIView):
queryset = News_Channel.objects.order_by('-total_star/total_user').all()
serializer_class = RankNewsChannelSerializers
如果有帮助,请帮助我吗?
答案 0 :(得分:2)
您可以添加具有所需值的字段,然后按其排序。
另外,您不需要.all()
queryset = News_Channel.objects \
.annotate(stars_per_user=F('total_star')/F('total_user')) \
.order_by('-stars_per_user')