gganli/application/common/model/UserSignGift.php

<?php

namespace app\common\model;

use think\Model;

class UserSignGift extends Model
{
    // 表名
    protected $name = 'user_sign_gift';
    // 开启自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';
    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';

    public function gift()
    {
        return $this->hasOne('Gift', 'id', 'gift_id',[],'LEFT');
    }
}