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

<?php
namespace app\common\validate;

use think\Db;
use think\Validate;

class DinnerGroup extends Validate{

    protected $rule = [
        'title|名称'  =>  'require|checkUnique',
    ];

    protected $message = [

    ];

    protected $scene = [

    ];

    protected function checkUnique($value,$rule,$data=[])
    {
        $info = Db::name('dinner_group')
            ->where('title',$value)
            ->where('org_id',$data['org_id'])
            ->where('start',$data['start'])
            ->where('del',0)
            ->find();
        if($data['id'] <= 0 && $info){
            return '名称已被使用';
        }
        if($info && $data['id'] > 0 && $info['id'] != $data['id']){
            return '名称已被使用';
        }
        return true;
    }

}