<?php
namespace app\usmobile\validate;

use think\Validate;

class Pinglun extends Validate
{

    protected $rule = [
        ['pid', 'require', 'pid不能为空'],
        ['cid', 'require', 'cid不能为空'],
        ['typeid', 'require', 'typeid不能为空'],
        ['content', 'require|check_value:content', '内容不能为空'],
    ];

    protected $scene = [
        'add'  => ['pid', 'cid', 'typeid', 'content'],
    ];

    protected function check_value($value, $rule)
    {
        switch ($rule) {
            case 'content':
                $length = utf8_strlen($value);
                if ($length < 6 || $length > 100) {
                    return '评论必须在6-100个字之间';
                }

                return true;
                break;
            case '':
                
                return true;
                break;
            default:
                # code...
                break;
        }
    }
}