标签：源码 generic ret queryset tor partial destory tin 使用
我们上一篇博客讲解了如何使用mixins类实现rest_framework的视图，但是其中有很多的冗余的代码，我们这边在来优化一下
首先看下对queryset操作的视图类是怎么写的
from rest_framework import mixins
from rest_framework import generics
class Auther_view(generics.ListCreateAPIView):
queryset = models.Auther.objects.all()
serializer_class = authermodelserializer
直接这样写就ok了，为什么呢？我们来看下generics.ListCreateAPIView类，不仅仅继承了我们之前写的3个类，还帮我们写了get和post方法，所以我们直接用上面的方法就是mixin类中的效果
class ListCreateAPIView(mixins.ListModelMixin,
mixins.CreateModelMixin,
GenericAPIView):
"""
Concrete view for listing a queryset or creating a model instance.
"""
def get(self, request, *args, **kwargs):
return self.list(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
return self.create(request, *args, **kwargs)
类只需要继承generics.RetrieveUpdateDestoryAPIView在一个类就可以了
class Autherdetail_view(generics.RetrieveUpdateDestroyAPIView):
queryset = models.Auther.objects.all()
serializer_class = authermodelserializer
这个类generics.RetrieveUpdateDestoryAPIView同样继承了我们我们想要的其他四个类，而且还帮我们重写了get、delete、put方法
class RetrieveUpdateDestroyAPIView(mixins.RetrieveModelMixin,
mixins.UpdateModelMixin,
mixins.DestroyModelMixin,
GenericAPIView):
"""
Concrete view for retrieving, updating or deleting a model instance.
"""
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 patch(self, request, *args, **kwargs):
return self.partial_update(request, *args, **kwargs)
def delete(self, request, *args, **kwargs):
return self.destroy(request, *args, **kwargs)
至此，基于通用类实现rest_framework的视图就讲解完了
Django的rest_framework的视图之基于通用类编写视图源码解析
标签：源码 generic ret queryset tor partial destory tin 使用
原文地址：https://www.cnblogs.com/bainianminguo/p/10463784.html
