django rest framework django-filter django rest framework使用django-filter用法

“`
INSTALLED_APPS = [
‘django_filters'
]

REST_FRAMEWORK = {
‘DEFAULT_FILTER_BACKENDS': ( ‘django_filters.rest_framework.DjangoFilterBackend',
),
}

from rest_framework.pagination import PageNumberPagination
from rest_framework import mixins
from rest_framework import viewsets
from rest_framework import filters

from django_filters.rest_framework import DjangoFilterBackend

from .models import Goods
from .serializers import GoodsSerializer
# 导入过滤器类
from .filters import GoodsFilter

class GoodsPagination(PageNumberPagination):
  page_size = 10
  page_size_query_param = "page_size"
  page_query_param = "p"
  max_page_size = 100

class GoodsListViewSet(mixins.ListModelMixin, viewsets.GenericViewSet):
  # 指定queryset
  queryset = Goods.objects.all()

  # 指定序列化类
  serializer_class = GoodsSerializer

  # 指定分页类
  pagination_class = GoodsPagination

  # 添加过滤器 这里可以吧django-filter过滤器添加进来 和 rest_framework的filters添加进来一起用, 也可以单个用, 看你的需求
  filter_backends = [DjangoFilterBackend, filters.SearchFilter]

  # 只需要简单的基于等同的过滤，则可以filter_fields在视图或视图集上设置属性，列出要过滤的字段集。
  # 等同就是根据你过滤的字段的数据必须跟数据库里那个字段的数据相同
  # filter_fields = ['name', 'shop_price']

  # 指定过滤器类
  filter_class = GoodsFilter

  search_fields = ['name', 'goods_brief', "goods_desc"]

import django_filters

from .models import Goods

class GoodsFilter(django_filters.rest_framework.FilterSet):
  """
  商品的过滤类
  """

  # 大于这个值 name指定字段 lookup_expr过滤条件
  # NumberFilter 数字类型
  price_min = django_filters.NumberFilter(name="shop_price", lookup_expr="gte")
  # 小于这个值
  price_max = django_filters.NumberFilter(name="shop_price", lookup_expr="lte")

  # name模糊查询, 不指定过滤条件, 必须全部匹配
  # CharFilter字符串类型
  name = django_filters.CharFilter(name="name", lookup_expr="icontains")

  class Meta:
    # 指定模型类
    model = Goods
    # 显示这两个字段
    fields = ["price_min", "price_max", "name"]

INSTALLED_APPS = [
  # drf过滤器 也 是xadmin的过滤器
  'django_filters',
  'rest_framework',
]

from django.conf.urls import url, include

from rest_framework.routers import DefaultRouter

from goods.views import GoodsListViewSet
# 生成一个注册器实例对象
router = DefaultRouter()
# 将需要自动生成url的接口注册
# 配置goods的url
router.register(r'goods', GoodsListViewSet, base_name="goods-list")

urlpatterns = [
  # 自动生成url
  url(r"^", include(router.urls)),
]