<?php namespace app\model; use think\Model; class MetaCampaign extends Model { // 数据表名称 protected $table = 'ad_meta_campaigns'; // 主键字段 protected $pk = 'id'; // 定义时间戳字段 protected $createTime = 'created_at'; protected $updateTime = 'updated_at'; // 不自动写入更新时间字段 protected $autoWriteTimestamp = true; // 关联广告账户 public function businessAccount() { return $this->belongsTo('MetaBusinessAccount', 'business_account_id'); } }