Access expire information about a cached template

[Fran Dieguez]

Hi all,

I'm using Smarty in an application that uses Varnish as a reverse proxy
that handles all the request in front of a lot of application servers.

Varnish avoids hitting the applications server by caching the request.
If you want to control the cacheability of the requests you can do it
with the "Expire" http header sending it from the application.

I'm able to set this required header with
header('Expire: A DATE CALCULATED BY the Application');

Although, if I'm using smarty caching, those cached pages are "static"
until the cache expires. I want to get the expiration time that Smarty
knows and use it as the expire header to send it to Varnish.

So, Is there any chance of getting the expire time of the cache file by
using and Smarty function?

Cheers
--
Fran Dieguez

[uwe.tews]

You can obtain the expiration time of the cache file as follow:

$tpl = $smarty->createTemplate('foo.tpl');
if ($tpl->cached->timestamp) {
   $expires = $tpl->cached->timestamp + $smarty->cache_lifetime;
} else {
  // cache file does not exists

[Fran Dieguez]

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Thanks for the quick reply.
Your snippet is working like a charm.

Cheers

--
Fran Dieguez

[aurelien gerits]

This example can be added in the documentation?
Best regards

Créateur de Magix CMS
Créateur de Magix cjQuery
Administrateur de Magix Dev, une agence web proche du client

2012/11/19 Fran Dieguez <lis...@mabishu.com>

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Thanks for the quick reply.
Your snippet is working like a charm.

Cheers

--
Fran Dieguez

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