xtu_mall/app/admin/validate/Lang.php

<?php
namespace app\admin\validate;

use think\Validate;

class Lang extends Validate
{
    protected $rule = [
        'name|语言名称' => 'require|max:50',
        'mark|语言标识' => 'require|regex:^[a-z]{2,20}$|unique:lang',
        'code|标准语言码' => 'require|regex:^[a-z\-]{2,20}$|unique:lang',
        'locale|地区标识' => 'require|max:20',
        'is_default|默认语言' => 'in:0,1',
        'is_enabled|启用状态' => 'in:0,1',
        'sort|排序' => 'number',
    ];

    protected $scene = [
        'add' => ['name', 'mark', 'code', 'locale', 'is_default', 'is_enabled', 'sort'],
        'edit' => ['name', 'mark', 'code', 'locale', 'is_default', 'is_enabled', 'sort'],
    ];
}