--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/views/decorators/vary.py Fri Jul 18 18:22:23 2008 +0000
@@ -0,0 +1,40 @@
+try:
+ from functools import wraps
+except ImportError:
+ from django.utils.functional import wraps # Python 2.3, 2.4 fallback.
+
+from django.utils.cache import patch_vary_headers
+
+def vary_on_headers(*headers):
+ """
+ A view decorator that adds the specified headers to the Vary header of the
+ response. Usage:
+
+ @vary_on_headers('Cookie', 'Accept-language')
+ def index(request):
+ ...
+
+ Note that the header names are not case-sensitive.
+ """
+ def decorator(func):
+ def inner_func(*args, **kwargs):
+ response = func(*args, **kwargs)
+ patch_vary_headers(response, headers)
+ return response
+ return wraps(func)(inner_func)
+ return decorator
+
+def vary_on_cookie(func):
+ """
+ A view decorator that adds "Cookie" to the Vary header of a response. This
+ indicates that a page's contents depends on cookies. Usage:
+
+ @vary_on_cookie
+ def index(request):
+ ...
+ """
+ def inner_func(*args, **kwargs):
+ response = func(*args, **kwargs)
+ patch_vary_headers(response, ('Cookie',))
+ return response
+ return wraps(func)(inner_func)