building-sign/app/model/Model.php

<?php
namespace app\model;

class Model extends Base 
{
    //获取模型列表
    public static function getList()
    {
        return self::order('sort asc')
        ->select()
        ->toArray();
    }
    public static function onAfterInsert($model)
    {
        $model->sort = $model->id;
        $model->save();
    }
}