Audit log of changes using Yii logging framework.
To enable edit config.php to add the log component configuration and preload the log module. E.g.
return array(
'components' => array(
// here there are db, session, urlManager, config components etc
// [ snip ]
'log'=>array(
'class' => 'CLogRouter',
'routes' => array(
array(
'class'=>'CFileLogRoute',
'categories'=>'application.Audit',
'logPath'=>'/var/log/limesurvey/',
'logFile'=>'audit.log',
),
),
),
),
'preload' => array('log'),
);
For further information on Yii logging see http://www.yiiframework.com/doc/guide/1.1/it/topics.logging