Day13-混入视图基类

文章目录

• 1.GeneriAPIView
• • 1.1 GenericAPIView是什么
  • 1.2 GenericAPIView内部属性
• 2 .混入类与扩展类
• • 2.1 混入类的功能划分
  • • • ListModelMixin
      • CreateModelMixin
      • RetrieveModelMixin
      • • UpdateModelMixin
      • DestroyModelMixin
  • 3. 扩展类的应用
  • • • CreateAPIView
      • ListAPIView
      • RetireveAPIView
      • DestoryAPIView
      • UpdateAPIView
      • ListCreateAPIView
      • RetrieveUpdateAPIView
      • RetrieveDestroyAPIView
      • RetrieveUpdateDestoryAPIView

1.GeneriAPIView 1.1 GenericAPIView是什么

继承自APIView，可以对视图和基类进行通用支持
GenericAPIView的导入

from rest_framework.generics import GenericAPIView

1.2 GenericAPIView内部属性

queryset = 列表所有查询的对象 指定结果集
serializers_class = 序列化器 指定序列化器
lookup_url_kwarg = ‘id’ 指定动态参数
lookup_field = ‘id’ 指定过滤的ORM的字段

2 .混入类与扩展类 2.1 混入类的功能划分 ListModelMixin

class ListView(ListModelMixin, GenericAPIView):
    queryset = People.objects.all()
    serializer_class = PeopleSerializers
    def get(self, request):
        return self.list(request)

CreateModelMixin

class CreateSer(serializers.PeoplelSerializer):
    class Meta:
        model = People
        fields = '__all__'
        
class CreateView(GenericAPIView, CreateModelMixin):
    serializer_class =PeopleSerializer
    def post(self, request):
        return self.create(request)

RetrieveModelMixin

class DetailView(GenericAPIView, RetrieveModelMixin):
    queryset = model.objects.all()
    serializer_class = PeopleSerializer
    lookup_field = 'id'
    lookup_url_kwarg = 'id'
    def get(self, request, id):
        return self.retrieve(request)

UpdateModelMixin

class UpdateView(GenericAPIView, UpdateModelMixin):
    queryset = model.objects.all()
    serializer_class = PeopleSerializer
    lookup_field = 'id'  # 被更新数据过滤字段
    lookup_url_kwarg = 'id'  # 被更新数据过滤条件参数值
    def put(self, request, id):
        return self.update(request)

DestroyModelMixin

class DeleteView(GenericAPIView, DestroyModelMixin):
    queryset = People.objects.all()
    def delete(self, request, id):
        return self.destroy(request)

3. 扩展类的应用 CreateAPIView

class PeopleCreateView(CreateAPIView):
    serializer_class = PeopleCreateSer

ListAPIView

class PeoplerListView(ListAPIView):
    queryset = People.objects.all()  # 你要序列化的哪些数据结果
    serializer_class = PeopleListSer  # 用什么序列化器

RetireveAPIView

class PeopleDetailView(RetrieveAPIView):
    lookup_field = 'id'  # 数据库里的字段
    lookup_url_kwarg = 'id'  # 过滤字段的条件，从路由传参数过来的
    queryset = People.objects.all()
    serializer_class = PeopleDetailSer

DestoryAPIView

class PeopleDestoryView(DestroyAPIView):
    lookup_field = 'pk'  # 数据库里的字段
    lookup_url_kwarg = 'id'  # 过滤字段的条件，从路由传参数过来的
    queryset = People.objects.all()

UpdateAPIView

• 提供 put 和 patch 方法，可以更新或者局部更新某条数据

继承自：GenericAPIView、UpdateModelMixin

class PeopleUpdateView(UpdateAPIView):
    lookup_field = 'id'  # 数据库里的字段
    lookup_url_kwarg = 'id'  # 过滤字段的条件，从路由传参数过来的
    queryset = People.objects.all()
    serializer_class = PeopleUpdateSer

ListCreateAPIView

from rest_framework.generics import ListCreateAPIView,RetrieveUpdateDestroyAPIView
class PeopleView(ListCreateAPIView):
#   1.指定查询结果集
    queryset = People.objects.all()
#   2.指定序列化器
   serializer_class = PeopleSerializer2

RetrieveUpdateAPIView

class PeopleRetrieveUpdateView(RetrieveUpdateAPIView):
    lookup_field = 'id'  # 数据库里的字段
    lookup_url_kwarg = 'id'  # 过滤字段的条件，从路由传参数过来的
    queryset = People.objects.all()
    serializer_class = PeopleRetrieveUpdateSer

RetrieveDestroyAPIView

class PeopleRetrieveDestroyView(RetrieveDestroyAPIView):
    lookup_field = 'id'  # 数据库里的字段
    lookup_url_kwarg = 'id'  # 过滤字段的条件，从路由传参数过来的
    queryset = People.objects.all()
    serializer_class = PeopleDeatilSer 

RetrieveUpdateDestoryAPIView

 class PeopleView2(RetrieveUpdateDestroyAPIView):
     #1、指定查询结果集
     queryset = People.objects.all()
     # 2.指定序列化器
     serializer_class =  PeopleSerializer2
      # 3.指定动态参数
      lookup_url_kwarg = 'id'
      # 4.指定过滤的ORM的字段
      lookup_field = 'id'