Django AttributeError模型對象沒有「過濾器」屬性

我試圖用Django做我自己的博客。我有一個觀點來展示一個從DetailView擴展的文章。爲了避免任何slu trouble的麻煩，我試圖用它的發佈日期來分類文章。一篇文章的URL是像這樣（其中pk對應於文章的蛞蝓）：Django AttributeError模型對象沒有「過濾器」屬性

r'articles/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<pk>[\w-]+)/$'

在我看來，我想這樣做：

def get_queryset(self): 
    year = self.kwargs.get("year", None) 
    month = self.kwargs.get("month", None) 
    day = self.kwargs.get("day", None) 

    publication_date = year + "-" + month + "-" + day 

    return Article.objects.get(created_at__startswith=publication_date, slug=self.kwargs.get("pk", None))

但它不工作，我不明白這一點... 其實它的工作原理，當我這樣做：

return Article.objects.filter(created_at__startswith=publication_date, slug=self.kwargs.get("pk", None))

但它返回一個QuerySet，我只是想一個文章！（[0]將返回相同的錯誤）

以下是錯誤：

AttributeError at /articles/2015/03/04/nouveau-site/ 
'Article' object has no attribute 'filter' 
Django Version: 1.6.2 
Exception Location: C:\Python27\lib\site-packages\django\views\generic\detail.py in get_object, line 37 
Python Version: 2.7.6

並全面追蹤：

Environment: 


Request Method: GET 
Request URL: http://localhost:8000/articles/2015/03/04/nouveau-site/ 

Django Version: 1.6.2 
Python Version: 2.7.6 
Installed Applications: 
('django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'groups', 
'posts', 
'users') 
Installed Middleware: 
('django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.common.CommonMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware') 


Traceback: 
File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response 
    114.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "C:\Python27\lib\site-packages\django\views\generic\base.py" in view 
    69.    return self.dispatch(request, *args, **kwargs) 
File "C:\Python27\lib\site-packages\django\views\generic\base.py" in dispatch 
    87.   return handler(request, *args, **kwargs) 
File "C:\Python27\lib\site-packages\django\views\generic\detail.py" in get 
    110.   self.object = self.get_object() 
File "C:\Python27\lib\site-packages\django\views\generic\detail.py" in get_object 
    37.    queryset = queryset.filter(pk=pk) 

Exception Type: AttributeError at /articles/2015/03/04/nouveau-site/ 
Exception Value: 'Article' object has no attribute 'filter'

提前感謝！

來源

2014-03-04 Yann Bertrand

的問題是：'獲得（）'給出了一個模型對象，而'get_queryset'預計要返回一個'queryset'。因此錯誤。 – karthikr

def get_queryset(self): 
    ... 

    return Article.objects.filter(created_at__startswith=publication_date, slug=self.kwargs.get("pk", None))

由於get_queryset必須返回QuerySet對象，而不是模擬一個

來源

2014-03-04 20:36:40

Django AttributeError模型對象沒有「過濾器」屬性

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