Django Caching for Authenticated Users Only

Question

Question

In Django, how can create a single cached version of a page (same for all users) that\'s only visible to authenticated users?

Setup

The pag

Answer 1

The default cache_page decorator accepts a variable called key_prefix. However, it can be passed as a string parameter only. So you can write your own decorator, that will dynamically modify this prefix_key based on the is_authenticated value. Here is an example:

from django.views.decorators.cache import cache_page

def cache_on_auth(timeout):
    def decorator(view_func):
        @wraps(view_func, assigned=available_attrs(view_func))
        def _wrapped_view(request, *args, **kwargs):
            return cache_page(timeout, key_prefix="_auth_%s_" % request.user.is_authenticated())(view_func)(request, *args, **kwargs)
        return _wrapped_view
    return decorator

and then use it on the view:

@cache_on_auth(60*60)
def myview(request)

Then, the generated cache_key will look like:

cache key:   
views.decorators.cache.cache_page._auth_False_.GET.123456.123456

if the user is authenticated, and

cache key:   
views.decorators.cache.cache_page._auth_True_.GET.789012.789012

if the user is not authenticated.