Question

我有一个通用视图，我在urls.py文件中使用login_required装饰器，如下所示：

(r'^my-url/$', login_required(ListView.as_view())),

现在，我想对这个网址使用vary_on_headers装饰器，但是我无法让它工作。

我试过了：

(r'^my-url/$', vary_on_headers(login_required(ListView.as_view()),'HTTP_X_REQUESTED_WITH'))

但我在测试期间遇到以下错误：

response = self.client.get('/my-url/', HTTP_X_REQUESTED_WITH='XMLHttpRequest')
  File "/lib/python2.6/site-packages/django/test/client.py", line 439, in get
    response = super(Client, self).get(path, data=data, **extra)
  File "/lib/python2.6/site-packages/django/test/client.py", line 241, in get
    return self.request(**r)
  File "/lib/python2.6/site-packages/django/core/handlers/base.py", line 178, in get_response
    response = middleware_method(request, response)
  File "/lib/python2.6/site-packages/django/middleware/common.py", line 94, in process_response
    if response.status_code == 404:
AttributeError: 'function' object has no attribute 'status_code'

如果我尝试：

(r'^my-url/$', login_required(vary_on_headers(MyProductsView.as_view(),'HTTP_X_REQUESTED_WITH'))),

但我现在收到以下错误：

response = self.client.get('/my-url/', HTTP_X_REQUESTED_WITH='XMLHttpRequest')
  File "/lib/python2.6/site-packages/django/test/client.py", line 439, in get
    response = super(Client, self).get(path, data=data, **extra)
  File "/lib/python2.6/site-packages/django/test/client.py", line 241, in get
    return self.request(**r)
  File "/lib/python2.6/site-packages/django/core/handlers/base.py", line 178, in get_response
    response = middleware_method(request, response)
  File "/lib/python2.6/site-packages/django/contrib/sessions/middleware.py", line 26, in process_response
    patch_vary_headers(response, ('Cookie',))
  File "/lib/python2.6/site-packages/django/utils/cache.py", line 133, in patch_vary_headers
    if response.has_header('Vary'):
AttributeError: 'function' object has no attribute 'has_header'

关于可能发生的事情以及如何解决这个问题的任何想法？

Answer 1

您已将正在装饰的视图功能与vary_on_headers decorator的标题参数混合在一起。

尝试以下方法：

(r'^my-url/$', vary_on_headers('X_REQUESTED_WITH')(login_required(ListView.as_view())),

或者，如果你想以相反的方式应用装饰器：

(r'^my-url/$', login_required(vary_on_headers('X_REQUESTED_WITH')(ListView.as_view())),

Answer 2

如果您有自定义视图类（或基类），则可以使用as_view()来装饰视图的method_decorator方法，而不是每次调用get。偶dispatch：

from django.utils.decorators import method_decorator

@method_decorator(vary_on_headers('X-Requested-With'))
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
    return super(MyView, self).dispatch(*args, **kwargs)

你也可以创建一个这样做的mixin。

使用带有vary_on_headers的login_required和Django中的通用视图

2 个答案: