<?php namespace app\model; use DateTimeInterface; use support\Model; class Customer extends Model { protected $table = 'customer'; protected $dateFormat = 'U'; public function serializeDate(DateTimeInterface $date) { return $date->format('Y-m-d H:i:s'); } public function user() { return $this->hasOne(SysUser::class, 'user_id', 'creator') ->select('user_id', 'user_name'); } }