mingde-bd/application/common/validate/AppIos.php

<?php
namespace app\common\validate;

use think\Validate;
use think\Db;

class AppIos extends Validate{

    protected $rule = [
        'ver|版本号'  =>  'require|length:1,30|checkVer',
        'content|更新内容'  =>  'require|length:1,200',
    ];


    protected function checkVer($value,$rules,$data){
        if($data['id'] > 0){
            $ret = Db::name('app_ios')->where('id','<>',$data['id'])->where('ver',$data['ver'])->where('del',0)->find();
            if($ret){
                return '版本已存在';
            }
        }else{
            $ret = Db::name('app_ios')->where('ver',$data['ver'])->where('del',0)->find();
            if($ret){
                return '版本已存在';
            }
        }
        return true;
    }
}