RESTFULL 03 rest-framework视图

rest-framework之视图

一 、基本视图

写一个出版社的增删查改resful接口

url：

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

views：

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,ListModelMixin,DestroyModelMixin,RetrieveModelMixin,UpdateModelMixin
from rest_framework.generics import GenericAPIView
class BooksView(CreateModelMixin,ListModelMixin,GenericAPIView):
	serializer_class=BookSerializer
	queryset=models.Book.objects.all()
	def post(self,request,*args, **kwargs):
		return self.create(request,*args, **kwargs)
	def get(self,request,*args, **kwargs):
		return self.list(request,*args, **kwargs)
class BookView(RetrieveModelMixin,UpdateModelMixin,DestroyModelMixin,GenericAPIView):
	serializer_class=BookSerializer
	queryset=models.Book.objects.all()
	def get(self, request, *args, **kwargs):
		#获取单条
		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)
class PublishView(CreateModelMixin,GenericAPIView):
    serializer_class=PublishSerializer
	 def post(self,request,*args, **kwargs):
       return self.create(request,*args, **kwargs)

三 、使用generics 下ListCreateAPIView,RetrieveUpdateDestroyAPIView

from rest_framework.generics import ListAPIView,ListCreateAPIView,RetrieveUpdateDestroyAPIView,DestroyAPIView,CreateAPIView
#它有两个接口，一个是获取所有，一个是新增
class BooksView(ListCreateAPIView):
	serializer_class=BookSerializer
	queryset=models.Book.objects.all()

class BookView(RetrieveUpdateDestroyAPIView):
	serializer_class=BookSerializer
	queryset=models.Book.objects.all()

四 、使用ModelViewSet

url：

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'})),

views

from rest_framework.viewsets import ModelViewSet
class BooksView(ModelViewSet):
	queryset=models.Book.objects.all()
	serializer_class=BookSerializer

五、ViewSetMixin的使用，重新了as_view方法

-要用ViewSetMixin，路由跟之前写法不一样了
-url(r'^test', views.Publish.as_view({'get':'aa'})),
-视图类中
from rest_framework.viewsets import ViewSetMixin
class Publish(ViewSetMixin,APIView):
    def aa(self,request):
        return HttpResponse('aa')