教义发现新的许多关系
[英]doctrine detect new manytomany relation
问题描述
I create preupdate and prepersist event listener for doctrine. 
我为理论创建preupdate和prepersist事件侦听器。 Have enity and i want check manytomany relation - is new or not. 有实体，我想检查许多关系-是否是新的。
task->tags
if tag is new do something 如果标签是新标签，请执行某些操作
1 个解决方案
解决方案1
2 已采纳 2017-04-25 09:39:11
Sorry, Doctrine doesn't support preUpdate listener for association changes. 抱歉，Doctrine不支持preUpdate侦听器进行关联更改。
http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/events.html#preupdate http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/events.html#preupdate
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