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

<?php
namespace app\common\validate;

use think\Db;
use think\Validate;

class ScreenTemplate extends Validate{

    protected $rule = [
        'title|名称'  =>  'require|length:1,50',
        'name|标识'  =>  'require|length:1,50|unique:screen_template',
//        'img|图片'  =>  'require',
        'nums|模块数量'  =>  'require|gt:0',
    ];

    protected function checkContent($value,$rule,$data=[])
    {
        if(!$data['content']){
            return '模块绑定不能为空';
        }
        $content = json_decode($data['content'],true);
        if(empty($content)){
            return '模块绑定不能为空';
        }
        foreach ($content as $k=>$v){
            if($v['mid'] == 0){
                return '未选择模块';
            }
        }
        return true;
    }

}