通过 Symfony 2.1 中的 postUpdate 监听器找出发生了什么变化 [英] Finding out what changed via postUpdate listener in Symfony 2.1

问题描述

我有一个 postUpdate 监听器，我想知道更新前的值是什么，更新后数据库条目的值是什么.在 Symfony 2.1 中有没有办法做到这一点?我查看了 getUnitOfWork() 中存储的内容，但由于更新已经发生，因此它是空的.

I have a postUpdate listener and I'd like to know what the values were prior to the update and what the values for the DB entry were after the update. Is there a way to do this in Symfony 2.1? I've looked at what's stored in getUnitOfWork() but it's empty since the update has already taken place.

推荐答案

找到解决方案 这里.我需要的实际上是 preUpdate() 的一部分.我需要在 LifecycleEventArgs 上调用 getEntityChangeSet().

Found the solution here. What I needed was actually part of preUpdate(). I needed to call getEntityChangeSet() on the LifecycleEventArgs.

我的代码:

public function preUpdate(EventLifecycleEventArgs $eventArgs)
{   
    $changeArray = $eventArgs->getEntityChangeSet();

    //do stuff with the change array

}

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