screen/application/admin/model/Orders.php

<?php

namespace app\admin\model;

/**
 */
class Orders extends \app\common\model\Orders
{
    public function user()
    {
        return parent::user()->setEagerlyType(0);
    }
    public function logistics()
    {
        $one=parent::logistics()->setEagerlyType(0);
        $one->joinType('left');
        return $one;
    }
}