Django_restframework

Django_restframework中的view的继承关系

GenericViewSet(viewset) -drf
    GenericAPIView      -drf
        APIView         -drf
            View        -django

Mixins

CreateModelMixin(object)
ListModelMinxin(object)
RetreveModelMixin(object)
UpdateModelMixin(object)
DestroyModelMixin(object)

drf过滤的实现（类似于django中的ORM）

class GoodsListViewSet(mixins.ListModelMixin,viewsets.GenericViewSet):
    '''
    商品列表页
    '''
    # queryset = Goods.objects.all()
    serializer_class = GoodsSerializer
    pagination_class = GoodsPageination

    def get_queryset(self):
        queryset = Goods.objects.all()
        price_min = self.request.query_params.get("price_min",0)
        if price_min:
            queryset = queryset.filter(shop_price__gt=price_min)
        return queryset

 

drf过滤进阶（范围查询，模糊查询）

import django_filters
from .models import Goods


class GoodsFilter(django_filters.rest_framework.FilterSet):
    #查询价格的范围
    pricemin = django_filters.NumberFilter(field_name="shop_price", lookup_expr='gte')
    pricemax = django_filters.NumberFilter(field_name="shop_price", lookup_expr='lte')
    #对商品名称进行模糊查询
    name = django_filters.CharFilter(field_name="name",lookup_expr='icontains')

    class Meta:
        model = Goods
        fields = ['pricemin','pricemax','name']

filters.SearchFilter（实现模糊查询最佳方法）

from rest_framework import filters

class GoodsListViewSet(mixins.ListModelMixin,viewsets.GenericViewSet):
    '''
    商品列表页
    '''
    queryset = Goods.objects.all()
    serializer_class = GoodsSerializer
    pagination_class = GoodsPageination
    filter_backends = (DjangoFilterBackend,filters.SearchFilter)
    filter_class = GoodsFilter

    #模糊查询
    search_fields = ('name', 'goods_brief', 'goods_desc')

 filters.OrderingFilter（实现升降序）

from rest_framework import filters

class GoodsListViewSet(mixins.ListModelMixin,viewsets.GenericViewSet):
    '''
    商品列表页
    '''
    queryset = Goods.objects.all()
    serializer_class = GoodsSerializer
    pagination_class = GoodsPageination
    filter_backends = (DjangoFilterBackend,filters.SearchFilter,filters.OrderingFilter)
    filter_class = GoodsFilter
    search_fields = ('name', 'goods_brief', 'goods_desc')
    ordering_fields = ('sold_num','shop_price')