How do I expire a django template cache key on receiving a signal?
caching, django, templates
Solution
Have a look at how the cache key is constructed:
args = md5_constructor(u':'.join([urlquote(resolve_variable(var, context)) for var in self.vary_on]))
cache_key = 'template.cache.%s.%s' % (self.fragment_name, args.hexdigest())
The key is a combination of the fragment name (`my_posts`) and a md5 sum of additional arguments to the cache tag. Since you don't have additional arguments, the hexdigest is `d41d8cd98f00b204e9800998ecf8427e` (the md5 hash of the empty string). The cache key should therefore end up to be
template.cache.my_posts.d41d8cd98f00b204e9800998ecf8427e
If you need a more general solution, this snippet might help.
Problem
In my front page template I use the cache function like this: ``` {% cache 86400 my_posts %} {% get_latest_posts %} {% endcache %} ``` When there is a new post I would like to expire the cache key; like this: ``` def clear_post_cache(): cache.delete('my_posts') post_save.connect(clear_post_cache, sender=Post) ``` My problem is that the cache key isn't accessible as 'my_posts'. How do I find the key name?