JDF_ElectronicPublicity_admin/app/common/model/base/other/Festival.php

<?php
namespace app\common\model\base\other;
use app\common\model\Common;
class Festival extends Common{
    protected $name = "system_festival";
    protected $pk = "festival_id";
    public function holiday()
    {
        return $this->hasMany(Holiday::class,'festival_id','festival_id');
    }
}