FBV/CBV

CBV、FBV　　

基于反射实现根据请求方式不同，执行不同的方法
原理看源码：url->view->dispatch(反射执行其他：['get', 'post', 'put', 'patch', 'delete', 'head', 'options', 'trace'])

 1 from django.shortcuts import render, HttpResponse
 2 from django.views import View
 3 from django.views.decorators.csrf import csrf_exempt
 4 
 5 
 6 @csrf_exempt
 7 def userinfo(request):
 8     import json
 9     user_list = ['悟空', '三藏']
10     return HttpResponse(json.dumps(user_list))
11 
12 from django.utils.decorators import method_decorator
13 
14 
15 class MybaseView(object):
16 
17     def dispatch(self, request, *args, **kwargs):
18         print('before')
19         ret = super(MybaseView, self).dispatch(request, *args, **kwargs)
20         print('after')
21         return ret
22 
23 
24 @method_decorator(csrf_exempt, name='dispatch')
25 class StudentView(MybaseView, View):
26 
27     def get(self, request, *args, **kwargs):
28         print('get')
29         return HttpResponse('GET')
30 
31     def post(self, request, *args, **kwargs):
32         return HttpResponse('POST')
33 
34     def put(self, request, *args, **kwargs):
35         return HttpResponse('PUT')
36 
37     def delete(self, request, *args, **kwargs):
38         return HttpResponse('DELTEE')
39 
40 
41 @method_decorator(csrf_exempt, name='dispatch')
42 class TeacherView(MybaseView, View):
43 
44     def get(self, request, *args, **kwargs):
45         return HttpResponse('GET')
46 
47     def post(self, request, *args, **kwargs):
48         return HttpResponse('POST')
49 
50     def put(self, request, *args, **kwargs):
51         return HttpResponse('PUT')
52 
53     def delete(self, request, *args, **kwargs):
54         return HttpResponse('DELTEE')

我这样继承可以相当于给类里边的方法加上装饰器的效果

执行流程图：

posted @ 2019-08-01 20:47 MC_Hotdog 阅读(213) 评论(0) 收藏举报

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