doctrine-orm - 如何在 preUpdate 事件监听器中更改字段的值？

Question

文档说:

Changes to fields of the passed entities are not recognized by the flush operation anymore, use the computed change-set passed to the event to modify primitive field values.

但它也说:

getEntityChangeSet() to get a copy of the changeset array. Changes to this returned array do not affect updating.

这是否意味着我不能在 preUpdate 事件监听器中更改实体的字段？如果没有，我将如何完成此更新？

Answer 1

显然，您需要自己重新计算变更集才能使更改生效:

$em = $args->getEntityManager();
$uow = $em->getUnitOfWork();
$meta = $em->getClassMetadata(get_class($entity));
$uow->recomputeSingleEntityChangeSet($meta, $entity);