1.常用配置
import django_filters
from django.db.models import Q from rest_framework.pagination import PageNumberPagination from rest_framework_extensions.cache.mixins import CacheResponseMixin from rest_framework import mixins from rest_framework import viewsets from django_filters.rest_framework import DjangoFilterBackend from rest_framework import filters from rest_framework_jwt.authentication import JSONWebTokenAuthentication from rest_framework import permissions from .models import Goods class GoodsFilter(django_filters.rest_framework.FilterSet): """ 商品的过滤类 """ pricemin = django_filters.NumberFilter(field_name='shop_price', help_text="最低价格", lookup_expr='gte') pricemax = django_filters.NumberFilter(field_name='shop_price', lookup_expr='lte')
# method 内置的方法不能满足时候,我们可以自己写自己的规则, 通过method指定函数名称 通过top_category自己定的的字段搜索 top_category = django_filters.NumberFilter(method='top_category_filter')
# contacts 模糊查询 i表示忽然大小写
name = django_filters.CharFilter(name='name', lookup_expr='icontacts')
name = django_filters.CharFilter(name='name', lookup_expr='icontacts')
def top_category_filter(self, queryset, name, value): return queryset.filter(Q(category_id=value) | Q(category__parent_category_id=value) | Q( category__parent_category__parent_category_id=value)) class Meta: model = Goods fields = ['pricemin', 'pricemax', 'is_hot', 'is_new'] class GoodsPagination(PageNumberPagination): ''' 分页设置 ''' page_size = 10 page_size_query_param = 'page_size' page_query_param = "page" max_page_size = 100 class IsOwnerOrReadOnly(permissions.BasePermission): """ 权限配置 """ # 先执行 has_permission 任何执行has_object_permission 函数 def has_permission(self, request, view): pass def has_object_permission(self, request, view, obj): # Read permissions are allowed to any request, # so we'll always allow GET, HEAD or OPTIONS requests. if request.method in permissions.SAFE_METHODS: return True # Instance must have an attribute named `owner`. return obj.user == request.user # 缓存 setting配置 REST_FRAMEWORK_EXTENSIONS = { # 缓存时间 'DEFAULT_CACHE_RESPONSE_TIMEOUT': 60 * 60, # 缓存存储 'DEFAULT_USE_CACHE': 'default', } # CacheResponseMixin 缓存 class GoodsListViewSet(CacheResponseMixin, mixins.ListModelMixin, mixins.RetrieveModelMixin, viewsets.GenericViewSet): """ 商品列表页, 分页, 搜索, 过滤, 排序 """ # throttle_classes = (UserRateThrottle, ) queryset = Goods.objects.all() serializer_class = GoodsSerializer # 分页配置 pagination_class = GoodsPagination # 登入认证 authentication_classes = (JSONWebTokenAuthentication,) # 过滤配置 DjangoFilterBackend 搜索配置SearchFilter 排序配置OrderingFilter filter_backends = (DjangoFilterBackend, filters.SearchFilter, filters.OrderingFilter) # 过滤 filter_class = GoodsFilter # 搜索 search_fields = ('name', 'goods_brief', 'goods_desc') # 排序 ordering_fields = ('sold_num', 'shop_price') # 权限认证 IsAuthenticated允许任何认证用户访问 IsAuthenticatedOrReadOnly为验证身份用户可以读 permission_classes = (permissions.IsAuthenticated, IsOwnerOrReadOnly)
2.获取user
# 获取user模型 user = self.context['request'].user user = request.user user = serializers.HiddenField( default=serializers.CurrentUserDefault() ) from django.contrib.auth import get_user_model User = get_user_model()
3.返回数据
class IndexCategorySerializer(serializers.ModelSerializer):
# 在model字段中加 related_name='brands' brands = BrandSerializer(many=True) # 自己定义模型里没有的字段返回 goods = serializers.SerializerMethodField() sub_cat = CategorySerializer2(many=True) ad_goods = serializers.SerializerMethodField() def get_ad_goods(self, obj): goods_json = {} ad_goods = IndexAd.objects.filter(category_id=obj.id, ) if ad_goods: good_ins = ad_goods[0].goods goods_json = GoodsSerializer(good_ins, many=False, context={'request': self.context['request']}).data return goods_json # 已get_字段名称 自己定义方法返回数据 def get_goods(self, obj): all_goods = Goods.objects.filter(Q(category_id=obj.id) | Q(category__parent_category_id=obj.id) | Q( category__parent_category__parent_category_id=obj.id)) goods_serializer = GoodsSerializer(all_goods, many=True, context={'request': self.context['request']}) return goods_serializer.data class Meta: model = GoodsCategory fields = "__all__"
4.rest framework关闭csrf_token认证
1.创建middleware.py 2.写入 from django.utils.deprecation import MiddlewareMixin class DisableCSRFCheck(MiddlewareMixin): def process_request(self, request): setattr(request, '_dont_enforce_csrf_checks', True) 3.在setting中注册中间件 'database.middleware.DisableCSRFCheck'
aa