DRF之排序

步骤

　　第一步：导入内置排序类

from rest_framework.filters import OrderingFilter

　　第二步：在视图类中配置(必须继承GenericAPIView)

class BookView(GenericViewSet, ListModelMixin):
    queryset = Book.objects.all()
    serializer_class = BookSerizlizer
    filter_backends = [OrderingFilter]
    ordering_fields = ['price']

　　第三步：查询

http://127.0.0.1:8000/books/?ordering=-price  # 倒序排
http://127.0.0.1:8000/books/?ordering=-price,-id # 先按价格倒序排，如果价格一样，再按id倒序排

 过滤和排序同时使用

　　过滤和排序可以同时用--->因为他们本质是for循环一个个执行，所有优先使用过滤，再使用排序

from rest_framework.filters import OrderingFilter
from rest_framework.filters import SearchFilter

class BookView(GenericViewSet, ListModelMixin):
    queryset = Book.objects.all()
    serializer_class = BookSerizlizer
    filter_backends = [SearchFilter,OrderingFilter]
    ordering_fields = ['price', 'id']
    search_fields = ['name', 'author']