我正在尝试使用Django创建自己的博客。我的目的是展示一篇从DetailView扩展而来的文章。 为了避免任何麻烦,我试图将文章分类为其发布日期。文章的网址是这样的(其中pk对应于文章的标题):
r'articles/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<pk>[\w-]+)/$'
在我看来,我想这样做:
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))
但它不起作用,我不明白...... 事实上,当我这样做时它会起作用:
return Article.objects.filter(created_at__startswith=publication_date, slug=self.kwargs.get("pk", None))
但它返回一个QuerySet,我只想要一篇文章! ([0]返回相同的错误)
这是错误:
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
完整的追溯:
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'
提前致谢!
答案 0 :(得分:11)
def get_queryset(self):
...
return Article.objects.filter(created_at__startswith=publication_date, slug=self.kwargs.get("pk", None))
因为get_queryset
必须返回QuerySet对象,而不是模型一