安装和使用Doctrine 2的SoftDeleteable行为扩展非常容易。问题通常在于尝试禁用它以用于某些代码部分,然后再次启用。您可能想要这样做来:
- 加载已软删除的实体
- 完全从数据库中删除实体,绕过软删除过滤器
那么如何禁用它呢?
安装和使用Doctrine 2的SoftDeleteable行为扩展非常容易。问题通常在于尝试禁用它以用于某些代码部分,然后再次启用。您可能想要这样做来:
那么如何禁用它呢?
根据文档,禁用实体管理器的筛选器:
$em->getFilters()->disable('softdeleteable');
$object = $em->find('AppBundle:Object', 1); // soft-deleted entity will be loaded
重新启用软删除的方法如下:$em->getFilters()->enable('softdeleteable');
注意:$em->clear();
如果实体已经使用禁用软删除过滤器加载,则在此行之前可能需要清除。
尽管文档没有提到,但如果您需要删除实体并绕过软删除过滤器,第一种解决方案不起作用。需要从实体管理器的事件侦听器中删除过滤器:
// initiate an array for the removed listeners
$originalEventListeners = [];
// cycle through all registered event listeners
foreach ($em->getEventManager()->getListeners() as $eventName => $listeners) {
foreach ($listeners as $listener) {
if ($listener instanceof \Gedmo\SoftDeleteable\SoftDeleteableListener) {
// store the event listener, that gets removed
$originalEventListeners[$eventName] = $listener;
// remove the SoftDeletableSubscriber event listener
$em->getEventManager()->removeEventListener($eventName, $listener);
}
}
}
// remove the entity
$em->remove($object);
$em->flush($object); // or $em->flush();
// re-add the removed listener back to the event-manager
foreach ($originalEventListeners as $eventName => $listener) {
$em->getEventManager()->addEventListener($eventName, $listener);
}
参考资料:
你可以使用服务来禁用和重新启用软删除筛选器行为:
<?php
namespace App\Util;
use Doctrine\ORM\EntityManagerInterface;
use Gedmo\SoftDeleteable\SoftDeleteableListener;
class SoftDeleteFilter
{
/**
* @var string
*/
const EVENT_NAME = 'onFlush';
/**
* @var object
*/
private $originalEventListener;
/**
* @param EntityManagerInterface $em
*/
public function removeSoftDeleteFilter(EntityManagerInterface $em)
{
foreach ($em->getEventManager()->getListeners() as $eventName => $listeners) {
foreach ($listeners as $listener) {
if ($listener instanceof SoftDeleteableListener) {
if ($eventName === self::EVENT_NAME) {
$this->originalEventListener = $listener;
$em->getEventManager()->removeEventListener($eventName, $listener);
}
}
}
}
}
/**
* @param EntityManagerInterface $em
*/
public function undoRemoveSoftDeleteFilter(EntityManagerInterface $em)
{
if (empty($this->originalEventListener)) {
throw new \Exception('can not undo remove, soft delete listener was not removed');
}
// re-add the removed listener back to the event-manager
$em->getEventManager()->addEventListener(self::EVENT_NAME, $this->originalEventListener);
}
}
使用方法:
$this->softDeleteFilter->removeSoftDeleteFilter($this->entityManager);
$this->entityManager->remove($entity);
$this->entityManager->flush();
$this->softDeleteFilter->undoRemoveSoftDeleteFilter($this->entityManager);
小提醒:
如果您想使用Gedmo Softdeletable硬删除实体,则必须在相应注释中设置hardDelete=true
,请参见:
@Gedmo\SoftDeleteable(fieldName="deletedAt", timeAware=false, hardDelete=true)
编辑:hardDelete=true
默认为真
有了这个,您就不必禁用监听器/过滤器。 如果您设置了hardDelete=false
,则上面建议的双重删除将无法正常工作。
来源:
hardDelete
为真。 - Aurelijus Rozenas
$em->remove($object); $em->flush($object);
两次。第一次刷新会将deletedAt
设置为现在。第二次刷新将识别先前已设置deletedAt
并将忽略实际删除 - 正如您可以在这里看到的 https://github.com/Atlantic18/DoctrineExtensions/blob/master/lib/Gedmo/SoftDeleteable/SoftDeleteableListener.php#L63-L71。 - qooplmao$em->getFilters()->disable('soft-deleteable');
- Luco