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  • view的封装

    一 基本视图

    写一个出版社的增删查改resful接口

    路由:

        url(r'^publish/$', views.PublishView.as_view()),
        url(r'^publish/(?P<pk>d+)/$', views.PublishDetailView.as_view()),

    视图:

     
    class PublishSerializers(serializers.ModelSerializer):
        class Meta:
            model=models.Publish
            fields='__all__'
    
    class PublishView(APIView):
    
        def get(self, request):
            publish_list = models.Publish.objects.all()
            bs = PublishSerializers(publish_list, many=True)
            # 序列化数据
    
            return Response(bs.data)
    
        def post(self, request):
            # 添加一条数据
            print(request.data)
    
            bs=PublishSerializers(data=request.data)
            if bs.is_valid():
                bs.save()  # 生成记录
                return Response(bs.data)
            else:
    
                return Response(bs.errors)
    
    class PublishDetailView(APIView):
        def get(self,request,pk):
            publish_obj=models.Publish.objects.filter(pk=pk).first()
            bs=PublishSerializers(publish_obj,many=False)
            return Response(bs.data)
        def put(self,request,pk):
            publish_obj = models.Publish.objects.filter(pk=pk).first()
    
            bs=PublishSerializers(data=request.data,instance=publish_obj)
            if bs.is_valid():
                bs.save() # update
                return Response(bs.data)
            else:
                return Response(bs.errors)
        def delete(self,request,pk):
            models.Publish.objects.filter(pk=pk).delete()
    
            return Response("")
     

    二 mixin类和generice类编写视图

     
    from rest_framework.mixins import CreateModelMixin,RetrieveModelMixin,ListModelMixin,UpdateModelMixin,DestroyModelMixin
    from rest_framework.generics import GenericAPIView
    class PublishView(ListModelMixin,CreateModelMixin,GenericAPIView):
        queryset=models.Publish.objects.all()
        serializer_class=PublishSerializers
    
        def get(self, request):
            return self.list(request)
    
        def post(self, request):
            return self.create(request)
    
    class PublishDetailView(RetrieveModelMixin,UpdateModelMixin,DestroyModelMixin,GenericAPIView):
        queryset=models.Publish.objects.all()
        serializer_class=PublishSerializers
        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)
     

    三 使用generics 下ListCreateAPIView,RetrieveUpdateDestroyAPIView

     
    from rest_framework.generics import ListCreateAPIView,RetrieveUpdateDestroyAPIView
    class PublishView(ListCreateAPIView):
        queryset=models.Publish.objects.all()
        serializer_class=PublishSerializers
    
    class PublishDetailView(RetrieveUpdateDestroyAPIView):
        queryset=models.Publish.objects.all()
        serializer_class=PublishSerializers
     

    四 使用ModelViewSet

    路由:

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

    视图:

    from rest_framework.viewsets import ModelViewSet
    class PublishView(ModelViewSet):
        queryset=models.Publish.objects.all()
        serializer_class=PublishSerializers
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  • 原文地址:https://www.cnblogs.com/xuechengeng/p/10432921.html
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