給類檢視新增裝飾器

給類新增裝飾器，那麼可以通過以下兩種方式來實現：

裝飾dispatch方法

from django.utils.decorators import method_decorator  # 給類的方法使用的裝飾器

def login_required(func):  # 裝飾器
    def wrapper(request,*args,**kwargs):
        if request.GET.get("username"):
            return func(request,*args,**kwargs)
        else:
            return
 
 redirect(reverse('index'))
    return wrapper


class IndexView(View):
    def get(self,request,*args,**kwargs):
        return HttpResponse("index")

    @method_decorator(login_required)  # 使用裝飾器
    def dispatch(self, request, *args, **kwargs):
        super(IndexView, self).dispatch(request,*args,**kwargs)
 

直接裝飾在整個類上

只用一個裝飾器 @method_decorator(裝飾器函式名,name='需要裝飾的函式名')

使用多個裝飾器 @method_decorator([裝飾器名1,裝飾器名2,...],name='需要裝飾的函式名')

from django.utils.decorators import method_decorator

def login_required(func):  # 裝飾器
    def wrapper(request,*args,**kwargs):
        if request.GET.get("username"):
            return
 
 func(request,*args,**kwargs)
        else:
            return redirect(reverse('login'))
    return wrapper


@method_decorator(login_required,name='dispatch')  # 選定需要裝飾的函式名
class IndexView(View):
    def get(self,request,*args,**kwargs):
        return HttpResponse("index")

    #def dispatch(self, request, *args, **kwargs):
     #   super(IndexView, self).dispatch(request,*args,**kwargs)