多对多关系象征2

Question

我在我的symfony2项目中使用了多对多关系，我成功地创建了两个实体"Users"和Groups，我还成功地持久化了数据，通过将数据插入到users、groups和users_groups表中

$user = new User();
$user->getGroups()->add($group);

现在我想编辑用户，该用户还应该编辑usersgroups记录。。

我找了很多，但没有找到。任何帮助都将不胜感激。。。

控制器

public function editAction()
{
if($this->getRequest()->query->get("id")){
$id = $this->getRequest()->query->get("id");
$request = $this->getRequest();
$em = $this->getDoctrine()->getEntityManager();
$entity = $em->getRepository('DesignAppBundle:Users')->find($id);

$editForm = $this->createForm(new UserType());

if ($this->getRequest()->getMethod() == 'POST') {
$editForm->bindRequest($request);
if ($editForm->isValid()) {
$postData = $request->request->get('users'); 

$repository = $this->getDoctrine()
->getRepository('Bundle:groups');
$group = $repository->findOneById($postData['group']);
$entity->addGroups($group );
$em->flush();
return $this->redirect($this->generateUrl('index'));            
}
}
return $this->render('User.html.twig',array(
'entity'      => $entity,
'edit_form'   => $editForm->createView(),
));
}       
}

形式

<?php
use and include .....

class UserType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$request = Request::createFromGlobals();
$builder->add('group', 'entity', array(
'class' => 'Bundle:Groups',
'property' => 'name',
'empty_value' => 'All',
'required' => true,
'multiple'=>true,
'data' => $request->get('group_id')
));

}
public function getDefaultOptions(array $options)
{
return array(
'validation_groups' => array('users'),
'csrf_protection' => false,
);
}
public function getName()
{
return 'users';
}
}

用户

/**
* @ORMManyToMany(targetEntity="Groups", inversedBy="users")
* @ORMJoinTable(name="users_groups",
*      joinColumns={@ORMJoinColumn(name="user_id", referencedColumnName="id")},
*      inverseJoinColumns={@ORMJoinColumn(name="group_id", referencedColumnName="id")}
*      )
**/  
protected $group;
public function __construct()
{
$this->group= new ArrayCollection();        
}
public function addgroups(DesignAppBundleEntityCategories $group)
{
$this->group[] = $group;
}

组

/**
* @ORMManyToMany(targetEntity="Users", mappedBy="group")
*/
protected $users;
public function __construct()
{
$this->users= new ArrayCollection();
}
/**
* Add users
*
* @param BundleEntityUsers $users
*/
public function addUsers(BundleUsers $users)
{
$this->users[] = $users;
}
/**
* Get users
*
* @return DoctrineCommonCollectionsCollection 
*/
public function getUsers()
{
return $this->users;
}

Answer 1

您不应该添加group_id，而应该添加groups属性

$builder->add('groups');

group_id列由Doctrine自动处理，您不应该自己直接处理它。您有group_id属性吗？如果你这样做了，你应该删除它。

集团实体应为：

/**
* @ORMManyToMany(targetEntity="Users", mappedBy="group")
*/
protected $users;
public function __construct()
{
$this->users= new ArrayCollection();
}
/**
* Add users
*
* @param BundleEntityUser $user
*/
public function addUsers(BundleUser $users)
{
$this->users[] = $users;
}
/**
* Get users
*
* @return DoctrineCommonCollectionsCollection 
*/
public function getUsers()
{
return $this->users;
}

编辑

你的控制器应该是这样的：

public function editAction($request)
{
$id = $this->getRequest()->query->get("id");
$em = $this->getDoctrine()->getEntityManager();
$entity = $em->getRepository('DesignAppBundle:Users')->find($id);
$editForm = $this->createForm(new UserType(),$entity);
if ($this->getRequest()->getMethod() == 'POST') {
$editForm->bindRequest($request);
if ($editForm->isValid()) {
$em->persits($entity);
$em->flush();
return $this->redirect($this->generateUrl('index'));            
}
}
return $this->render('User.html.twig',array(
'entity'      => $entity,
'edit_form'   => $editForm->createView(),
));
}

这就是你的UserType应该是什么：

class UserType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder->add('group', 'entity', array(
'class' => 'Bundle:Groups',
'property' => 'name',
'empty_value' => 'All',
'required' => true,
'multiple'=>true,
));
}
public function getDefaultOptions(array $options)
{
return array(
'validation_groups' => array('users'),
'csrf_protection' => false,
);
}
public function getName()
{
return 'users';
}
}