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Caching in template function doesn't work

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pitbull82
Smarty Rookie

Joined: 01 Feb 2006
Posts: 18
Location: Poland

Posted: Wed Mar 30, 2011 11:11 am Post subject: Caching in template function doesn't work

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Hello

I have a few simple files as below.

index.php

Code:

<?php
require ('libs/Smarty.class.php');

$page = new Smarty();
$page->plugins_dir[]='plugins';

$page->display('index.tpl');

?>

templates/index.tpl

Code:

{testfunction}

templates/menu.tpl

Code:

{$menu}

plugins/function.testfunction.php

Code:

<?php

function smarty_function_testfunction($params, &$template)
{

$template->setCaching(\Smarty::CACHING_LIFETIME_SAVED);
$template->setCacheLifetime(3600);

if (!$template->isCached('menu.tpl')) {
$template->assignGlobal('menu',rand(0,100000));
}

$output = $template->fetch('menu.tpl');
$template->setCaching(\Smarty::CACHING_OFF);
return $output;
}
?>

Unfortunately Smarty doesn't create any cache files at all in this situation. If I move code to index.php (with tiny changes to create cache for menu.tpl) it creates cache file correctly. I can suppose this may be related to scope issues (similar thread but not about caching - http://www.smarty.net/forums/viewtopic.php?t=19045 ) b. Does anyone know how to solve it or maybe I'm doing something in wrong way?

Best regards

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U.Tews
Administrator

Joined: 22 Nov 2006
Posts: 5068
Location: Hamburg / Germany

Posted: Thu Mar 31, 2011 8:35 pm Post subject:

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It's again the scoping.
Your $template->setCaching(...) will effect the setting of the template object of index.tpl, not the setting for menu.tpl.

Solution: create an new explicite template object for menu.tpl

Code:

function smarty_function_testfunction($params, &$template)
{
$tpl=$template->createTemplate('menu.tpl');
$tpl->setCaching(Smarty::CACHING_LIFETIME_SAVED);
$tpl->setCacheLifetime(10);

if (!$tpl->isCached()) {
$tpl->assignGlobal('menu',rand(0,100000));
}

$output = $tpl->fetch();
$tpl->setCaching(Smarty::CACHING_OFF);
return $output;
}

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pitbull82
Smarty Rookie

Joined: 01 Feb 2006
Posts: 18
Location: Poland

Posted: Sat Apr 02, 2011 6:11 pm Post subject:

Thanks a lot. It's working now without any problems

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