Django / python：'function'对象没有属性'as_view' [英] Django/python: 'function' object has no attribute 'as_view'

问题描述

我正在尝试为模型查询器创建一个list_view。运行我的服务器时返回：属性错误 - 'function'对象没有属性'as_view'。我很乐意帮助我解决这个问题。

这是我的代码：

Views.py：

  @login_required 
 class live_bids（ListView）：
 
 model = Post 
 template_name = 'loggedin_load / live_bids.html'
 
 def get_queryset（self）：
 return Post.objects.all（）。prefetch_related（'bids'）。filter（user = self.request.user ）
  

urls.py：

  url（r'^ live_bids / $'，live_bids.as_view（）），
  

解决方案

您不能在这样的类上使用 login_required decorator。您需要使用 method_decorator 。在Django 1.9+上，您可以装饰课程：

  from django.contrib.auth.decorators import login_required 
 from django.utils.decorators import method_decorator 
 
 @method_decorator（login_required，name ='dispatch'）
 class LiveBids（LoginRequiredMixin，ListView）：
 ... 
  

在早期版本中，您需要覆盖 dispatch 并使用 method_decorator

  class LiveBids（LoginRequiredMixin，ListView）：
 @method_decorator（login_required）
 def dispatch（self，* args，** kwargs）：
 return super（LiveBids，self）.dispatch（* args，** kwargs）
  

最简单的解决方案是使用 LoginRequiredMixin 而不是装饰器（与Django 1.9 +配合使用）

  from django.contrib.au th.mixins import LoginRequiredMixin 
 
 class LiveBids（LoginRequiredMixin，ListView）：
 model = Post 
 template_name ='loggedin_load / live_bids.html'
 
 def get_queryset（self）：
 return Post.objects.all（）。prefetch_related（'bids'）。filter（user = self.request.user）
   LiveBids ，以匹配推荐的Django样式。您还必须更新网址格式。
 
I am trying to create a list_view for a model queryset. When running my server, it returns : attribute error - 'function' object has no attribute 'as_view'. I would appreciate helping me in solve this.

Here's my code:

Views.py:
@login_required 
class live_bids(ListView):

    model = Post 
    template_name = 'loggedin_load/live_bids.html'

    def get_queryset(self):
        return Post.objects.all().prefetch_related('bids').filter(user=self.request.user)
urls.py:
 url(r'^live_bids/$', live_bids.as_view()),

解决方案
You can't use the login_required decorator on a class like that. You need to use method_decorator. On Django 1.9+, you can decorate the class:
from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator

@method_decorator(login_required, name='dispatch')
class LiveBids(LoginRequiredMixin, ListView):
    ...
On earlier versions, you need to override dispatch and use method_decorator there.
class LiveBids(LoginRequiredMixin, ListView):
    @method_decorator(login_required)
    def dispatch(self, *args, **kwargs):
        return super(LiveBids, self).dispatch(*args, **kwargs)
The easiest solution is to use LoginRequiredMixin instead of the decorator (works with Django 1.9+)
from django.contrib.auth.mixins import LoginRequiredMixin

class LiveBids(LoginRequiredMixin, ListView):
    model = Post 
    template_name = 'loggedin_load/live_bids.html'

    def get_queryset(self):
        return Post.objects.all().prefetch_related('bids').filter(user=self.request.user)
Note that in the examples, I have renamed the view to LiveBids, to match the recommended Django style. You'll have to update the url pattern as well.

                        
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