public function rules()
{
return [['user_id, type, ip, token, expire_time', 'required'], ['user_id, type, status', 'numerical', 'integerOnly' => true], ['token, ip', 'length', 'max' => 255], ['update_time', 'safe'], ['id, user_id, token, type, status, create_time, update_time, ip', 'safe', 'on' => 'search']];
}