jili2/application/common/validate/DeviceLog.php

<?php
namespace app\common\validate;

use think\Db;
use think\Validate;

class DeviceLog extends Validate{

    protected $rule = [
        'sn|编号'  =>  'require|checkUnique',
        'type|类型'  =>  'require',

    ];

    protected $message = [
    ];

    protected $scene = [

    ];

    protected function checkUnique($value,$rule,$data=[])
    {
        $info = Db::name('device_log')
            ->where('sn',$value)
            ->where('del',0)
            ->where('type',$data['type'])->find();
        if($data['id'] <= 0 && $info){
            return '编号已存在';
        }
        if($info && $data['id'] > 0 && $info['id'] != $data['id']){
            return '编号已存在';
        }
        return true;

    }
}