我试图从集合中删除实体,但它不起作用。
我想我在哪里搞错了,但我不知道在哪里。
这里是我的updateAction
:的代码
$em = $this->getDoctrine()->getEntityManager();
$entity = new Person();
if (!$entity) {
throw $this->createNotFoundException('Unable to find Person entity.');
}
$editForm = $this->createForm(new PersonType(), $entity);
$deleteForm = $this->createDeleteForm($id);
$request = $this->getRequest();
$editForm->bindRequest($request);
if ($editForm->isValid()) {
$entity = $editForm->getData();
$em->persist($entity);
foreach($entity->getAddresses() as $address)
{
$em->persist($address);
}
$em->flush();
return $this->redirect($this->generateUrl('person_show', array('id' => $id)));
}
return $this->render('AppPersonBundle:Person:edit.html.twig', array(
'entity' => $entity,
'edit_form' => $editForm->createView(),
'delete_form' => $deleteForm->createView(),
);
请注意,为了删除我的实体,我从html中删除了div。
我的意思是,例如,我删除了<div id="myapp_personbundle_persontype_address_4">
。
这是正确的方式吗?
多亏了这个答案,我找到了更好的解决方案。您可以使用Doctrine的孤儿移除功能:
class Gallery
{
//...
/**
* @ORM'OneToMany(targetEntity="Photo", mappedBy="gallery", cascade={"persist", "remove"}, orphanRemoval=true)
*/
private $photos;
//...
public function removePhotos($photo)
{
$this->photos->remove($photo);
$photo->setGallery(null);
}
}
现在,我做:
[...]
$editForm = $this->createForm(new PersonType(), $entity);
$deleteForm = $this->createDeleteForm($id);
$previousCollections = array(
'addresses' => $entity->getAddresses(),
);
$request = $this->getRequest();
$editForm->bindRequest($request);
if ($editForm->isValid()) {
$entity = $editForm->getData();
$this->deleteCollections($em, $previousCollections, $entity);
$em->persist($entity);
foreach($entity->getAddresses() as $address)
{
$em->persist($address);
}
$em->flush();
return $this->redirect($this->generateUrl('person_show', array('id' => $id)));
}
[...]
}
private function deleteCollections($em, $init, $final)
{
if (empty($init)) {
return;
}
if (!$final->getAddresses() instanceof 'Doctrine'ORM'PersistentCollection) {
foreach ($init['addresses'] as $addr) {
$em->remove($addr);
}
}
}
我希望有一天能找到解决方案https://github.com/symfony/symfony/issues/1540,但发现速度很慢。
symfony2中的Form集合非常简单,它几乎为您完成了所有的工作。基本上,您只需要添加一个collection type
并设置allow_add
、allow_delete
标志,然后添加一个小的JavaScript代码。看看食谱示例
我正在使用这个解决方案。。。
在控制器中:
$em = $this->getDoctrine()->getManager();
$enity->removeElements($em);
//Add all your elements again in order to update entity collection.
$entity->addElement($element) ...
....
$em->persist($entity);
$em->flush();
在实体中:
public function removeElements($em)
{
$elements = $this->elements;
foreach ($elements as $element) {
$this->elements->removeElement($element);
$em->remove($element);
$em->persist($this);
}
}
对我来说,它很有效,显示的代码更少,而且我不必使用orphanRemove功能。