TrainController.class.php
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<?php
/**
* Created by PhpStorm.
* User: liyifei2012it
* Date: 17/9/20
* Time: 18:20
*/
namespace Frontend\Controller\UpdateDB;
use Think\Db;
class TrainController extends AbstractController
{
public function before_action($action = '')
{
return parent::before_action($action);
}
/**
* @desc 和线下培训上线，一起更新（2017-09-21 18:30）
* 1、新闻资讯，oa_news_article表，将content字段数据类型由TEXT改为MEDIUMTEXT;
* @author liyifei
*/
public function UpdateNews()
{
$sql = "ALTER TABLE `oa_news_article` CHANGE COLUMN `content` `content` MEDIUMTEXT NOT NULL COMMENT '新闻内容';";
$this->_exeSql($sql);
}
/**
* 执行sql语句
* @author liyifei
* @param $sql
*/
private function _exeSql($sql)
{
if (empty($sql)) {
exit('没有可升级的sql');
}
$db = &Db::getInstance();
try {
$db->execute($sql);
} catch (\Exception $e) {
exit("数据库升级失败：" . $e->getMessage());
}
exit("数据库升级完成，执行sql如下：{$sql}");
}
}