我想从数据库中删除与Symfony2中特定user_id匹配的所有记录。
$em = $this->getDoctrine()->getManager();
$user_service = $em->getRepository('ProjectTestBundle:UserService')
->findByUser($this->getUser()->getId());
这可能会返回一些匹配的对象,所以当我运行时:
$em->remove($user_service);
$em->flush();
发生错误:
EntityManager#remove() expects parameter 1 to be an entity object, array given.
如何删除符合特定条件的所有记录(对象)? 顺便说一句,当我在mysql中运行一个等效的sql语句时,它运行得很好。
答案 0 :(得分:26)
为什么不直接遍历对象数组?
$user_services = $em->getRepository('ProjectTestBundle:UserService')
->findByUser($this->getUser()->getId());
foreach ($user_services as $user_service) {
$em->remove($user_service);
}
$em->flush();
答案 1 :(得分:3)
您也可以使用以下内容:
$user_services = $em->getRepository('ProjectTestBundle:UserService')->findByUser($this->getUser()->getId());
array_walk($user_services, array($this, 'deleteEntity'), $em);
$em->flush();
然后在您的控制器中添加此方法:
protected function deleteEntity($entity, $key, $em)
{
$em->remove(entity);
}
或者只是使用:
$user_services = $em->getRepository('ProjectTestBundle:UserService')->findByUser($this->getUser()->getId());
$this->deleteEntities($em, $user_services);
$em->flush();
...
protected function deleteEntities($em, $entities)
{
foreach ($entities as $entity) {
$em->remove($entity);
}
}
请注意,使用Propel
和PropelBundle
时,PropelObjectCollection
会实现delete()
功能,因此您无需手动执行此循环。
答案 2 :(得分:1)
您还可以使用原则查询构建器delete
方法。
public function deleteAllByUser(UserInterface $user)
{
$query = $this->createQueryBuilder('related_entity')
->delete()
->andWhere('related_entity.user = :user')
->setParameter('user', $user)
->getQuery();
return $query->execute();
}
答案 3 :(得分:-1)
如果你返回一个对象,你只需要写:
->findOneByUser,
你不需要一个foreach循环。如果你的返回是一个数组,那么你需要做->findByUser
并写一个for循环:
foreach ($entities as $entity)
{
//do something
}