Django-website Program Case Series-10 verification Adorner

FBV Decorator:

def auth (func):     #装饰器函数    def inner (request, *args, **kwargs):        v = Request. Cookies.get (' username ')        if not V:            return redirect ('/log/')        return func (Request, *args, **kwargs)    return inner

　　

How to use:

Add @auth to the function

CBV Decorator:

The first way: Using Django's own tools

def auth (func):         #装饰器函数  authenticates a cookie    def inner (request, *args, **kwargs):        v = Request. Cookies.get (' username ')        if not V:            return redirect ('/log/')        return func (Request, *args, **kwargs)    Return innerfrom Django Import views from    django.utils.decorators import method_decorator  #导入django自带的工具class Auth (views. View):    @method_decorator (auth)  #利用django自带工具 Import the authentication function adorner for authentication, flexibly placed under any function requiring authentication    def get (self, request) :        v = Request. Cookies.get (' username ')        return render (Request, ' user_list.html ', {' Current_User ': v})    def post (self, Request):        v = Request. Cookies.get (' username ')        return render (Request, ' user_list.html ', {' Current_User ': v})

　　

The second way:

From the Django Import viewsfrom django.utils.decorators import method_decoratorclass Auth (views. View):    @method_decorator (auth)     #将装饰器放在父类方法上 so that all the methods under this class are decorated with decorators, not all written on the function    def dispatch (self, request , *args, **kwargs):        return Super (Auth, self). Dispatch (self, request, *args, **kwargs)    def get (self, request): C5/>v = Request. Cookies.get (' username ')        return render (Request, ' user_list.html ', {' Current_User ': v})    def post (self, request ):        v = Request. Cookies.get (' username ')        return render (Request, ' user_list.html ', {' Current_User ': v})

　　

The Third Way:

From Django Import viewsfrom django.utils.decorators import method_decorator@method_decorator (auth, Name= ' dispatch ')  #将装饰器直接装饰在类上面, the Diapatch method, which is decorated in the parent class with name, also implements the decorative effect class Auth (views) of all the methods in the class. View):    def get (self, request):        v = Request. Cookies.get (' username ')        return render (Request, ' user_list.html ', {' Current_User ': v})    def post (self, request ):        v = Request. Cookies.get (' username ')        return render (Request, ' user_list.html ', {' Current_User ': v})

　　

Django-website Program Case Series-10 verification Adorner