public function pre_update()
{
if ($this->accessAdminPage(5)) {
require_once dirname(__FILE__) . '/resources/update.php';
$updater = new Updater($this->parent);
return $updater->preUpdate();
} else {
$this->parent->parent->addHeader('Location', '/admin/modules/');
return new ActionResult($this, '/admin/modules/', 1, 'You are not allowed to do that', B_T_FAIL);
}
}