本文介绍了Laravel-如何使用观察者检查更新哪一列的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我只想了解使用观察者进行了bieng更新的一列
I want to know about only one column which is bieng updated using observer
<?php
namespace App\Observers;
use App\OnsiteHistory;
class OnsiteHistoryObserver
{
public function updated(OnsiteHistory $onsiteHistory)
{
if ($onsiteHistory->status == 'accepted'){
// send email
}
}
}
我只想检查状态列是否已更新.我该怎么办?
I want to check only status column is updated.How do I can do that?
推荐答案
经过一番研究并查看了Laravel的源代码之后，我找到了解决方法.
After the bit of research and looking in to the Laravel source I have found way to do it.
Laravel Elouqont提供了一种方法isDirty([])
Laravel Elouqont provides a method isDirty([])
namespace App\Observers;
use App\OnsiteHistory;
class OnsiteHistoryObserver
{
public function updated(OnsiteHistory $onsiteHistory)
{
if ($onsiteHistory->isDirty(['status']) && strtolower($onsiteHistory->status) == 'accepted'){
dd('I am updated')
}
}
}
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