我在 Laravel 之外使用了 eloquent。我已經在 compposer.json 中安裝了illuminate/database?，F在我創建了一個擴展 Illuminate\Database\Eloquent\Model 類的類?，F在我想使用 DB::row()，但出現錯誤這是我的代碼：模型.phpnamespace Framework;use Helpers\Helper;use Illuminate\Database\Capsule\Manager as Capsule;use Illuminate\Database\Eloquent\Model as BaseModel;class Model extends BaseModel {    public $Error = null;    public $Connection = null;    public $qry_builder = null;    public $version;    public $table_name;    function __construct() {        try{            parent::__construct();            $capsule = new Capsule;            $capsule->addConnection([                'driver'    => DB_DRIVER,                'host'      => DB_HOST,                'database'  => DB_NAME,                'username'  => DB_USER,                'password'  => DB_PSSWD,                'charset'   => 'utf8'            ]);            $capsule->setAsGlobal();            $capsule->bootEloquent();        }  catch (\Exception $ex){            Helper::log()->log(LogLevel::ERROR, "Unable to connect DB", ["DB_NAME"=> DB_NAME,"HOST"=>DB_HOST,"DB_USER"=>DB_USER,"DB_PASSWORD"=>DB_PSSWD]);        }    }}BankMinMaxModel.phpnamespace  Models;use \Framework\Model;use Helpers\Helper;class BankMinMaxModel extends Model {    protected $table = "tbl_pl_bank_min_max_new";    protected $primaryKey = 'id';    // protected $fillable = [];    public $timestamps = false;     protected $guarded = [];    public function get($where){        $data = null;        echo $data = self::orderBy("id", "DESC")->where($where)->selectRow("MIN(NULLIF(min_turnover,0)) as min_turnover")->toSql();        exit;        if($data){            $data = $data->toArray();        }        return $data;    }}控制器 ：$loanMinMaxValues = (new BankMinMaxModel)->get([["occup_id", "=", 3]]);錯誤“調用未定義的方法 Illuminate\Database\Eloquent\Builder::selectRow()”