drf - APIView 實現 CBV

APIView 的使用

• 導入 APIView from rest_framework.view import APIView

• 自定義類，繼承APIView,並提供和請求相關的方法

  class UserView(APIView):
  
      def get(self, request, *args, **kwargs):
          """
          查看所有的用戶
          :param request:
          :param args:
          :param kwargs:
          :return:
          """
          serilaizer = None
          if "pk" in kwargs:
  
              queryset = User.objects.filter(pk=kwargs.get("pk")).first()
              serilaizer = UserSerializer(queryset, context={"request": request})
          else:
              queryset = User.objects.all()
              # 序列化 用戶信息
              serilaizer = UserSerializer(queryset, many=True, context={"request": request})
  
          return Response(serilaizer.data, status=status.HTTP_200_OK)
  
      def post(self, request, *args, **kwargs):
          """
          新增用戶
          :param request:
          :param args:
          :param kwargs:
          :return:
          """
          serialzier = UserSerializer(data=request.data)
          # 校驗數據
          if serialzier.is_valid():
              serialzier.save()
              return Response(serialzier.data, status=status.HTTP_201_CREATED)
  
          return Response(serialzier.errors, status.HTTP_400_BAD_REQUEST)
  
      def put(self, request, pk, *args, **kwargs):
  
          # 1、根據主鍵、查詢用戶信息
          instance = User.objects.filter(pk=pk).first()
  
          # 2、接收頁面參數
          serializer = UserSerializer(instance=instance, data=request.data, context={"request": request})
          # 3、校驗頁面參數
          if serializer.is_valid():
              # 4、更新數據
              serializer.save()
              return Response(serializer.data)
  
          return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
  
      def delete(self, request, pk , *args, **kwargs):
  
          User.objects.filter(pk=pk).delete()
          return Response(status=status.HTTP_204_NO_CONTENT)
  
  

  • 定義路由 urls.py

    path('users', views.UserView.as_view(), name="user-list")
    path('users/(?P<pk>\d+$)', views.UserView.as_view(), name="user-detail")