public function execute($filterChain)
{
// Create a function cache object for the QubitSettings method call
$cache = new sfFileCache(array('cache_dir' => sfConfig::get('sf_app_cache_dir') . '/settings'));
// Get settings (from cache if exists)
if ($cache->has('settings')) {
$settings = unserialize($cache->get('settings'));
} else {
$settings = QubitSetting::getSettingsArray();
$cache->set('settings', serialize($settings));
}
// Overwrite/populate settings into sfConfig object
sfConfig::add($settings);
// Execute next filter
$filterChain->execute();
}