Shopware 6：如何通过SalesChannel级别的EventSubscriberInterface检测任何类别的添加/更新？

问题描述

有人知道如何检查Shopware 6中是否在添加/更新/删除了特定类别吗？

我想通过 Subscriber 使用Symfony\Component\Eventdispatcher\EventSubscriberInterface还是必须实现其他功能？

更新：能够找到几个与实体相关的事件，但仍无法区分（检测）类别是添加还是修改

plugin / src / Resources / config / services.xml

<!-- ... -->
<service id="MyPlugin\MySubscriber">
    <tag name="kernel.event_subscriber"/>
</service>
<!-- ... -->

MySubscriber.PHP

<?PHP declare(strict_types=1);

namespace MyPlugin;

use Symfony\Component\Eventdispatcher\EventSubscriberInterface;
use Shopware\Core\Content\Category\CategoryEvents;
use Shopware\Core\Content\Category\Event\CategoryIndexerEvent;
use Shopware\Core\Framework\DataAbstractionLayer\Event\EntityDeletedEvent;
use Shopware\Core\Framework\DataAbstractionLayer\Event\EntityWrittenEvent;

class MySubscriber implements EventSubscriberInterface
{
    public static function getSubscribedEvents(): array
    {
        return [
            CategoryEvents::CATEGORY_INDEXER_EVENT => 'onCategoryIndex',CategoryEvents::CATEGORY_DELETED_EVENT => 'onCategoryDelete',CategoryEvents::CATEGORY_WRITTEN_EVENT => 'onCategoryWritten'
        ];
    }

    public function onCategoryWritten(EntityWrittenEvent $event): void
    {
        $ids = $event->getIds();    
        //how to check here whether category is adding or modified here or any other event.
        //EntityWrittenEvent in both actions(add/modify) this listener is triggering
        file_put_contents('/var/onCategoryWritten.text',print_r($ids,true),FILE_APPEND | LOCK_EX);
    
    }

    public function onCategoryDelete(EntityDeletedEvent $event): void
    {
        $ids = $event->getIds();
        file_put_contents('/var/onCategoryDelete.text',FILE_APPEND | LOCK_EX);

    }
    
    public function onCategoryIndex(CategoryIndexerEvent $event): void
    {
        $ids = $event->getIds();
        file_put_contents('/var/onCategoryIndex.text',FILE_APPEND | LOCK_EX);
    }
}

解决方法

您可以检查在写入结果中完成的操作，例如

foreach(event->getWriteResults() as $writeResult) {

    if ($writeResult->getOperation() === EntityWriteResult::OPERATION_INSERT) 
    {
        //entity created
    }
    if ($writeResult->getOperation() === EntityWriteResult::OPERATION_UPDATE) 
    {
        //entity updated/modidfied
    }
}