DRF的过滤

1、添加到app里面django

INSTALLED_APPS = [
     'django_filters',
]

2、新建filter.pyapp

# goods/filters.py

import django_filters

from .models import Goods


class GoodsFilter(django_filters.rest_framework.FilterSet):
    '''
    商品过滤的类
    '''
    #两个参数,name是要过滤的字段,lookup是执行的行为,‘小与等于本店价格’
    price_min = django_filters.NumberFilter(name="shop_price", lookup_expr='gte')
    price_max = django_filters.NumberFilter(name="shop_price", lookup_expr='lte')

    class Meta:
        model = Goods
        fields = ['price_min', 'price_max']

3、views.pyspa

from .filters import GoodsFilter
from django_filters.rest_framework import DjangoFilterBackend

class GoodsListViewSet(mixins.ListModelMixin,viewsets.GenericViewSet):
    '商品列表页'

    #这里必需要定义一个默认的排序,不然会报错
    queryset = Goods.objects.all().order_by('id')
    # 分页
    pagination_class = GoodsPagination
    serializer_class = GoodsSerializer
    filter_backends = (DjangoFilterBackend,)

    # 设置filter的类为咱们自定义的类
    filter_class = GoodsFilter

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