如何在EasyAdmin prePersist检查是否有记录重复/重复

use Doctrine\ORM\Event\LifecycleEventArgs;

class YourEntityListener
{
    public function prePersist(YourEntity $entity, LifecycleEventArgs $event)
    {
        $entityManager = $event->getEntityManager();
        $repository = $entityManager->getRepository(YourEntity::class);

        // 根据需要修改以下代码来检查记录是否重复
        $existingRecord = $repository->findOneBy(['fieldName' => $entity->getFieldName()]);

        if ($existingRecord) {
            throw new \Exception('记录已存在，不能重复添加。');
        }
    }
}

easy_admin:
    entities:
        YourEntity:
            class: App\Entity\YourEntity
            new:
                pre_persist: App\EventListener\YourEntityListener