DRF之 过滤 搜索 排序

drf提供的过滤

 - 引入

from rest_framework.filters import BaseFilterBackend

- 情景代码(过滤查询)

 1 class CourseFilter(BaseFilterBackend):
 2 
 3     def filter_queryset(self,request, queryset, view): 重写filter_queryset
 4         extra = {}
 5 
 6         category_id = str(request.query_params.get("category_id"))  # query_params 相当于 GET
 7 
 8         if not category_id.isdigit() or category_id == "0": 
 9             extra = extra
10         else:
11             extra.update({"course_category_id":category_id})
12         
13         return queryset.filter(**extra)  # 必须返回queryset

- 挂载

1 class CourseView(ModelViewSet):
2 
3     filter_backends = [CourseFilter,]

 

搜索

 - 引入

from rest_framework.filters import SearchFilter

 - 挂载

filter_backends=(SearchFilter,)

 - 直接指定查询字段

search_fields = ('name',)

 

排序

 - 与搜索相似

from rest_framework.filters import OrderingFilter

filter_backends = (OrderingFilter,)

ordering_fields = ('name',)