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try:
from functools import wraps
except ImportError:
from django.utils.functional import wraps # Python 2.4 fallback.
from django.utils.cache import patch_vary_headers
from django.utils.decorators import available_attrs
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, assigned=available_attrs(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, assigned=available_attrs(func))(inner_func)
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