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

<?php
namespace app\common\validate;

use think\Db;
use think\Validate;

class DinnerWechat extends Validate{

    protected $rule = [
        'org_id' =>  'require|checkOrgId',
        'app_id|开发者ID'  =>  'require',
        'secret|开发者密码'  =>  'require',
        'mch_id|商户号'  =>  'require',
        'key|支付秘钥'  =>  'require',
    ];

    protected $message = [
        'org_id.require' => '未选择项目'
    ];

    protected $scene = [

    ];

    protected function checkOrgId($value,$rule,$data=[])
    {
        if(isset($data['id']) && $data['id'] > 0){
            $ret = Db::name('dinner_wechat')
                ->where('org_id',$data['org_id'])
                ->where('id','<>',$data['id'])
                ->find();
        }else{
            $ret = Db::name('dinner_wechat')
                ->where('org_id',$data['org_id'])
                ->find();
        }

        return $ret?'该项目已有配置':true;
    }

}