private function getDefaultValueForGeneral($key)
    {
        switch ($key) {
            case 'site_name':
                $value = config('app.name');
                break;
            case 'site_desc':
                $value = "GZERO-CMS Content management system.";
                break;
            default:
                $value = config('gzero.' . $key);
                return $value;
        }
        return $value;
    }