xtu_mall/app/admin/validate/cms/Models.php

<?php
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// | 模型验证
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namespace app\admin\validate\cms;

use think\Validate;

class Models extends Validate
{
    //定义验证规则
    protected $rule = [
        'name|模型名称'     => 'require|chs|max:30|unique:cms_model',
        'tablename|表键名' => 'require|max:20|unique:cms_model|regex:[a-z][a-z\_]+',
        'type|模型类型'     => 'in:1,2',
    ];
}