Question

TL; DR：

我似乎无法将每次浏览缓存应用于基于类的视图的get_queryset方法。有没有其他方法可以用来将缓存应用于基于类的视图方法？或者，根本没有办法吗？

目前，我得到的错误是：'View'对象没有属性'method'。如果我在视图顶部写相同的装饰器，我得到：'函数'对象没有属性'as_view'（下面的回溯）。

详细信息：

以下是观点：

#@cache_page(20)
class OnlineView(ListView):
    template_name = "online.html"
    paginate_by = 75

    #@cache_page(20)   
    def get_queryset(self):
        users = Session.objects.filter(last_activity__gte=(timezone.now()-timedelta(minutes=5))).only('user').distinct('user')
        return users

这是我在视图顶部写入缓存标记时获得的追溯：

Traceback (most recent call last):
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 92, in inner_run
    self.validate(display_num_errors=True)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/management/base.py", line 280, in validate
    num_errors = get_validation_errors(s, app)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/management/validation.py", line 35, in get_validation_errors
    for (app_name, error) in get_app_errors().items():
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/loading.py", line 166, in get_app_errors
    self._populate()
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/loading.py", line 75, in _populate
    self.load_app(app_name)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/loading.py", line 96, in load_app
    models = import_module('.models', app_name)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/debug_toolbar/models.py", line 63, in <module>
    patch_root_urlconf()
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/debug_toolbar/models.py", line 51, in patch_root_urlconf
    reverse('djdt:render_panel')
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 467, in reverse
    app_list = resolver.app_dict[ns]
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 311, in app_dict
    self._populate()
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 263, in _populate
    for pattern in reversed(self.url_patterns):
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 347, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 342, in urlconf_module
    self._urlconf_module = import_module(self.urlconf_name)
  File "/home/hassan/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/home/hassan/Desktop/unconnectedredditpk/unconnectedreddit/urls.py", line 26, in <module>
    url(r'^online/$', auth(OnlineView.as_view()), name='online'),
AttributeError: 'function' object has no attribute 'as_view'

最后，这是我在 urls.py 中的相关内容：

url(r'^online/$', auth(OnlineView.as_view()), name='online'),

Answer 1

通过adding the caching in your URL config：

，您可以更轻松地实现这一目标

from django.views.decorators.cache import cache_page

url(r'^online/$', cache_page(20)(auth(OnlineView.as_view())), name='online'),

但是我注意到你在同一个视图上有一个auth()装饰器。我不确定你想要缓存需要身份验证的视图......

基于类的视图中的get_queryset方法的每视图缓存（Django应用程序）

1 个答案: