<?php namespace app\mobile\model; use think\Model; class Old extends Model { // 表名 protected $name = 'mobile_old'; // 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'; // 追加属性 protected $append = [ 'do_num' ]; public function getDoNumAttr($value,$data){ return $data['do_num_virtual'] + $data['do_num_real']; } }