odd_job/app/common/model/DemandLog.php

<?php
namespace app\common\model;

use think\Model;

class DemandLog extends Model
{
	// 设置字段信息
    protected $schema = [
        'id'			=> 'int',
		'workerid'		=> 'int',
		'demandid'		=> 'int',
		'gworkerid'		=> 'int',
        'createtime'	=> 'int'
    ];
	
	// 设置字段自动转换类型
	protected $type = [
        'createtime'  => 'timestamp:Y-m-d H:i:s'
    ];
	
	// 关联Worker
	public function worker()
	{
	    return $this->hasOne(Worker::class, "id", "workerid");
	}
	
	// 关联Demand
	public function demand()
	{
	    return $this->hasOne(Demand::class, "id", "demandid");
	}
	
	// 关联Worker
	public function gworker()
	{
	    return $this->hasOne(Worker::class, "id", "gworkerid");
	}
	
}