static function &Instance($type = null)
{
static $audit = NULL;
if (!$audit) {
$audit = new Audit();
$result = false;
$result = $audit->loadBy('sessionid', session_id());
if ($result === false) {
$data = array('sessionid' => session_id(), 'username' => '', 'customer_id' => '');
if (isset($_SESSION['username'])) {
$data['username'] = $_SESSION['username'];
}
if (isset($_SESSION['customer_id'])) {
$data['customer_id'] = $_SESSION['customer_id'];
}
$errors = array();
$audit = Audit::Factory($data, $errors, 'Audit');
$audit->save();
}
}
if (isset($_SESSION['username']) && $audit->username != $_SESSION['username']) {
$audit->username = $_SESSION['username'];
$audit->save();
}
return $audit;
}