在類視圖中裝飾器的AttributeError at /demoview/ 'DemoView' object has no attribute 'path' 解決方法

在/classview/urls.py中代碼

from django.http import HttpResponse
from django.shortcuts import render
from django.views.generic import View

# Create your views here.


def my_decorator(view_func):
    def wrapper(request, *args, **kwargs):
        print('裝飾器被調用')
        print(request.path)
        return view_func(request, *args, **kwargs)
    return wrapper


class DemoView(View):

    @my_decorator
    def get(self, request):
        return HttpResponse('get page')

    def post(self, request):
        return HttpResponse('post page')
           

在/classview/urls.py中代碼

from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^demoview/$', views.DemoView.as_view())
    # url(r'^demoview/$', views.my_decorator(views.DemoView.as_view())) 在路由中進行定義
]
           

辦法一（為特定請求方法添加裝飾器）：

from django.utils.decorators import method_decorator
#省略代碼
class DemoView(View):

    @method_decorator(my_decorator)
    def get(self, request):
        return HttpResponse('get page')

    def post(self, request):
        return HttpResponse('post page')
           

方法二（為全部請求方法添加裝飾器）：

from django.utils.decorators import method_decorator

# 為全部請求方法添加裝飾器
class DemoView(View):

    @method_decorator(my_decorator)
    def dispatch(self, *args, **kwargs):
        return super().dispatch(*args, **kwargs)

    def get(self, request):
        return HttpResponse('get page')

    def post(self, request):
        return HttpResponse('post page')
           

方法三（method_decorator裝飾器還支援使用name參數指明被裝飾的方法）：

# 為全部請求方法添加裝飾器
@method_decorator(my_decorator, name='dispatch')
class DemoView(View):
    def get(self, request):
        return HttpResponse('get page')

    def post(self, request):
        return HttpResponse('post page')


# 為特定請求方法添加裝飾器
@method_decorator(my_decorator, name='get')
class DemoView(View):
    def get(self, request):
        return HttpResponse('get page')

    def post(self, request):
        return HttpResponse('post page')