#在用户认证时的一个应用
1 装饰器：
2 FBV：
3 def auth(func):
4 def inner(reqeust,*args,**kwargs):
5 v = reqeust.COOKIES.get('user')
6 if not v:
7 return redirect('/login')
8 return func(reqeust, *args,**kwargs)
9 return inner
10
11 CBV:
12 from django import views
13 from django.utils.decorators import method_decorator
14
15 @method_decorator(auth, name='dispatch') #也可以写到类上, 这样在get,post请求都可以省略， 也可以写在类里面方法上
16 class Order(views.View):
17 #@method_decorator(auth)
18 #def dispatch(self, request, *args, **kwargs):
19 #return super(Order, self).dispatch(request, *args, **kwargs)
20
21 #@method_decorator(auth): #只对get请求有效
22 def get(self, request):
23 v = request.COOKIE.get('username')
24 return render(request, 'index.html', {'current_user': v })
25
26 def post(self, request):
27 v = request.COOKIE.get('username')
28 return render(request, 'index.html', {'current_user': v })
