from django.views.decorators.csrf import csrf_exempt

@csrf_exempt

def foo(request):

    return HttpResponse("foo")

# 方式1  在类上方使用

@method_decorator(csrf_exempt,name="dispatch")

class IndexView(View):

    # 方式2  在类的 dispatch 方法上使用 @csrf_exempt

    @method_decorator(csrf_exempt)

    def dispatch(self, request, *args, **kwargs):

    print("hello world")

    # 执行父类的dispatch方法

        res=super(IndexView,self).dispatch(request, *args, **kwargs)

        print("hello boy")

        return res
                    

from django.views.decorators.csrf import csrf_exempt

urlpatterns = [

    url(r'^myview/$', csrf_exempt(views.MyView.as_view()), name='myview'),

]

以books为例：

(1)创建表，数据迁移

(2)创建表序列化类BookSerializer

class BookSerializer(serializers.HyperlinkedModelSerializer):

	class Meta:

		model=Book

		fields="__all__"

(3)创建视图类：

  class BookViewSet(viewsets.ModelViewSet):

		queryset = Book.objects.all()

		serializer_class = BookSerializer

(4) 设计url：

 router.register(r'books', views.BookViewSet)

from rest_framework.views import APIView

class APIView(View):

    def as_view():

        view = super(APIView, cls).as_view(**initkwargs)  #  self.dispatch

    def dispatch():

         # 重新封装request

         request = self.initialize_request(request, *args, **kwargs)

         self.request = request

        # 初始化操作

        self.initial(request, *args, **kwargs)

        if request.method.lower() in self.http_method_names: 
　　　　　　　# http_method_names = ['get', 'post', 'put', 'patch', 'delete', 'head', 'options', 'trace']

            handler = getattr(self, request.method.lower(),self.http_method_not_allowed)  
　　　　　　　# handler=self.get

            response = handler(request, *args, **kwargs)   # self.get(request, *args, **kwargs)

1 CBV :

    as_view

    dispatch

2 掌握API源码流程：

    as_view

    dispatch

3 serializers组件