// +---------------------------------------------------------------------- namespace App\Services\Common; use App\Models\CapitalLogModel; use App\Services\BaseService; /** * 资产交易明细-服务类 * Class CapitalLogService * @package App\Services\Common */ class CapitalLogService extends BaseService { // 静态对象 protected static $instance = null; /** * 构造函数 * @since 2020/11/10 * CapitalLogService constructor. */ public function __construct() { $this->model = new CapitalLogModel(); } /** * 静态入口 * @return static|null */ public static function make() { if (!self::$instance) { self::$instance = (new static()); } return self::$instance; } }