blog_tp6/app/model/GuestBook.php

<?php
namespace app\model;

class GuestBook extends Base
{
    protected $schema = [
        "id"      => 'int',
        "name"    => "varchar",
        "contact" => "varchar",
        "content" => "varchar",
        "url"     => "varchar",
        "time"    => 'int',
        "mark"    => 'int',
        "remark"  => "varchar"
    ];
}