我与Symfony2中的网络应用程序，其中一个用户具有与实体团的数组相关多对多。 用户可以通过表单上传实体$产品，并通过形式传递的数据之一，是与用户关联的使命。
还有比为每个用户只有一个任务多个; 所以，当他上载$产品对象，他也应该能够选择他喜欢的使命。
要上传我在下面的方式控制器使用的一种形式的文件：
$form = $this->createFormBuilder($product)
->add('mission', 'entity', array('required' => true, 'multiple' => false, 'class' => 'AcmeManagementBundle:Mission', 'query_builder' => function($repository) { return $repository->createQueryBuilder('c')->orderBy('c.id', 'ASC'); },))
//...
->add('save', 'submit')
->getForm();
它的工作原理，但不罚款：实际上在这个领域，我可以选择所有的存储任务，而不是只与用户相关联的人。
我然后设法：
$form = $this->createFormBuilder($product)
->add('mission', 'collection', array('required' => true) )
//...
->add('save', 'submit')
->getForm();
它的工作原理，但只显示一个任务，并且不允许用户选择首选任务。
我也试过用：
->add('mission', 'collection', array('required' => true) )
但它告诉我：
Neither the property "missions" nor one of the methods "getMissions()",
"isMissions()", "hasMissions()", "__get()" exist and have public access
in class "Acme\GroundStationBundle\Entity\Product".
我应该如何改变我的控制？
我的产品实体是：
class Product
{
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\OneToMany(targetEntity="Acme\ManagementBundle\Entity\Mission", mappedBy="product")
*/
protected $mission;
//...
/**
* Set mission
*
* @param string $mission
* @return Product
*/
public function setMission($mission)
{
$this->mission = $mission;
return $this;
}
/**
* Get mission
*
* @return string
*/
public function getMission()
{
return $this->mission;
}
//...
UPDATE ---
我也会把我的产品和使命的实体，如要求在评论
这是我的用户实体：
abstract class User extends BaseUser
{
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\ManyToMany(targetEntity="Acme\ManagementBundle\Entity\Mission", inversedBy="users", orphanRemoval=true)
* @ORM\JoinTable(name="user_mission")
*/
private $missions;
/**
* Add missions
*
* @param \Acme\ManagementBundle\Entity\Mission $missions
* @return User
*/
public function addMission(\Acme\ManagementBundle\Entity\Mission $missions)
{
$this->missions[] = $missions;
return $this;
}
//...
而我的任务实体：
<?php
namespace Acme\ManagementBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
/**
* @ORM\Entity
*/
class Mission {
/**
* @ORM\Id
* @ORM\GeneratedValue
* @ORM\Column(type="integer")
* @var integer
*/
protected $id;
/**
* @ORM\Column(type="string", length=60)
* @var String
*/
protected $name;
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\ManyToOne(targetEntity="Acme\GroundStationBundle\Entity\Product", inversedBy="mission")
* @ORM\JoinColumn(name="productId", referencedColumnName= "id")
*/
private $product;
/**
* @ORM\Column(type="string", length=600)
* @var String
*/
protected $description;
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\ManyToMany(targetEntity="Acme\ManagementBundle\Entity\User", mappedBy="missions", cascade={"all"}, orphanRemoval=true)
*/
private $users;
public function __construct(){
$this -> users = new ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
* @return Mission
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set description
*
* @param string $description
* @return Mission
*/
public function setDescription($description)
{
$this->description = $description;
return $this;
}
/**
* Get description
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Add users
*
* @param \Acme\ManagementBundle\Entity\User $users
* @return Mission
*/
public function addUser(\Acme\ManagementBundle\Entity\User $users)
{
$this->users[] = $users;
return $this;
}
/**
* Remove users
*
* @param \Acme\ManagementBundle\Entity\User $users
*/
public function removeUser(\Acme\ManagementBundle\Entity\User $users)
{
$this->users->removeElement($users);
}
/**
* Get users
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getUsers()
{
return $this->users;
}
public function __toString()
{
return $this->name;
}
/**
* Set product
*
* @param \Acme\GroundStationBundle\Entity\Product $product
* @return Mission
*/
public function setProduct(\Acme\GroundStationBundle\Entity\Product $product = null)
{
$this->product = $product;
return $this;
}
/**
* Get product
*
* @return \Acme\GroundStationBundle\Entity\Product
*/
public function getProduct()
{
return $this->product;
}
}
