注意
django的cbv模式添加装饰器需要导入特殊方法 method_decorator
使用cbv实现视图
from django.views import View from django.utils.decorators import method_decorator class LoginView(View): def get(self, request): return render(request, "login.html") def post(self, request): user = request.POST.get("name") pwd = request.POST.get("pwd") if user == "safly" and pwd == "123": # 登陆成功 # 写session request.session["user2"] = user request.session.set_expiry(5) return redirect("/index/") def index(request): return render(request,"index.html")
加在CBV视图的get或post方法上
# @method_decorator(wrapper, name="get") class IndexView(View): @method_decorator(wrapper) def get(self, request): user = request.session.get("user02", "游客") return render(request, "index.html", {"user": user})
加在dispatch方法上(某些特殊装饰器只能加在dispatch上,例如csrf认证)
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
# @method_decorator(wrapper, name="get") class IndexView(View): ## 这么写所有的请求方法都要做登录校验 @method_decorator(wrapper) def dispatch(self, request, *args, **kwargs): return super(IndexView,self).dispatch(request,*args,**kwargs) # @method_decorator(wrapper) def get(self, request): user = request.session.get("user04", "游客") return render(request, "index.html", {"user": user})
备注:
csrf_protect,为当前函数强制设置防跨站请求伪造功能,即便settings中没有设置全局中间件。
csrf_exempt,取消当前函数防跨站请求伪造功能,即便settings中设置了全局中间件
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
from django.views.decorators.csrf import csrf_exempt, csrf_protect class HomeView(View): @method_decorator(csrf_exempt) def dispatch(self, request, *args, **kwargs): return super(HomeView, self).dispatch(request, *args, **kwargs) def get(self, request): return render(request, "home.html") def post(self, request): print("Home View POST method...") return redirect("/index/")