restframework CBV试图的4种方式

day100

上节回顾

1 APIView流程

2 序列化组件（restframework）

    1 #  自定义序列化组件
        class BookSerializers(serializers.Serializer):
            title=serializers.CharField()
            price=serializers.CharField()
            publishDate=serializers.DateField()

            #   针对一对多
            publish=serializers.CharField(source="publish.name")
            publish_email=serializers.CharField(source="publish.email")
            #   针对多对多
            authors=serializers.SerializerMethodField()
            def get_authors(self,obj):
               data=[]
               for i in obj.authors.all():
                  temp=[]
                  temp.append(i.pk)
                  temp.append(i.name)
                  data.append(temp)
               return data    
        #  ModelSerializer序列化组件            
      class BookSerializers(serializers.ModelSerializer):
         class Meta:
            model=Book
            fields="__all__"

         publish = serializers.CharField(source="publish.name")
         authors=serializers.SerializerMethodField()
         def get_authors(self,obj):
            data=[]
            for i in obj.authors.all():
               temp=[]
               temp.append(i.pk)
               temp.append(i.name)
               data.append(temp)
            return data

     2 5个接口

         "books"   GET:获取所有数据
                  POST:添加一条数据

         "book/1"  GET:获取单条数据
                  DELETE:删除一条数据
                  PUT/PATCH:更新一条数据

      3
       (1) 功能之序列化：
            book_list = Book.objects.all()
            ps = BookSerializers(book_list, many=True)
            ps.data

            book_obj=Book.objects.filter(pk=pk).first()
            bs=BookSerializers(book_obj,many=False)

       (2) 校验字段与操作记录（ModelSerializer拥有）
               # 添加数据
               bs=BookSerializers(data=request.data)
               if bs.is_valid(): #校验字段接口
                  bs.save()     # 生成记录接口
                  return Response(bs.data)    # 序列化接口   

               # 更新数据 
               bs=BookSerializers(data=request.data,instance=book_obj)
               if bs.is_valid(): #校验字段接口
                  bs.save()     #更新记录接口
                  return Response(bs.data)    # 序列化接口

3 视图

    (1) 

        class AuthorView(APIView):
           def get():
              pass
          def post():
              pass

       class AuthorDetailView(APIView):
           def get():
              pass
          def delete():
              pass
             def put():
                 pass

     (2)  class AuthorView(CreateModelMixin,ListModelMixin,generics.GenericAPIView,):

            queryset=Author.objects.all
            serializer_class=AuthorSerializers

            def get(self,request):
               return self.list(request)
            def post(self,request):

               return self.create(request)

      class AuthorDetailView(DestroyModelMixin,UpdateModelMixin,RetrieveModelMixin,generics.GenericAPIView,):
            queryset = Author.objects.all
            serializer_class = AuthorSerializers

            def get(self,request, *args, **kwargs):
               return self.retrieve(request, *args, **kwargs)

            def put(self,request, *args, **kwargs):
               return self.update(request, *args, **kwargs)

            def delete(self,request, *args, **kwargs):
               return self.destroy(request, *args, **kwargs)
      (3)   class AuthorView(generics.ListCreateAPIView):

            queryset=Author.objects.all
            serializer_class=AuthorSerializers

         class AuthorDetailView(generics.RetrieveUpdateDestroyAPIView):
            queryset = Author.objects.all
            serializer_class = AuthorSerializers

     (4)   class AuthorModelView(ModelViewSet):

            queryset=Author.objects.all()
            serializer_class=AuthorSerializers

    ViewSetMixIn

　　　　第4种的url要传参数，注意  如：

　　　　　　url(r'^publishs/$',views.PublishView.as_view({"get":"list","post":"create"})),
　　
url(r'^publishs/(?P<pk>\d+)/$',views.PublishView.as_view({"put":"update","get":"retrieve","delete":"destroy"}))

4 解析器
    class APIView：
        parser_classes = api_settings.DEFAULT_PARSER_CLASSES