ruiRoad_pro_v1.0/app/dao/work/WorkMediaDao.php

<?php


namespace app\dao\work;


use app\dao\BaseDao;
use app\model\work\WorkMedia;

/**
 * Class WorkMediaDao
 * @package app\dao\work
 */
class WorkMediaDao extends BaseDao
{

    /**
     * @return string
     */
    protected function setModel(): string
    {
        return WorkMedia::class;
    }

    /**
     * 删除时效的media_id
     */
    public function deleteValidFile()
    {
        return $this->getModel()
            ->where('temporary', 1)
            ->where('valid_time', '<>', 0)
            ->where('valid_time', '<', time())
            ->update(['media_id' => '', 'valid_time' => 0]);
    }
}