我使用Symfony2创建了一个Web应用程序，其中User具有与实体Mission相关的数组关联ManytoMany。用户可以通过表单上传实体$产品，表单传递的数据之一是与用户关联的任务。
每个用户只有一个任务;因此，当他上传$ product对象时，他也应该能够选择他喜欢的任务。
要上传文件，我按照以下方式在控制器中使用表单：
$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();
它有效，但不是很好：确实在这个领域我可以选择存储的所有任务，而不仅仅是与用户相关的任务。
然后我尝试了：
$form = $this->createFormBuilder($product)
->add('mission', 'collection', array('required' => true) )
//...
->add('save', 'submit')
->getForm();
它可以工作但只显示一个任务，并且不允许用户选择首选任务。
我也尝试过：
->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".
我应该如何更改我的控制器？
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;
}
//...
更新---
我还会在评论中提到我的产品和使命实体
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;
}
//...
我的使命实体：
<?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;
}
}
答案 0 :(得分：2)
说这个：
财产“任务”和其中一种方法都没有 “getMissions（）”，“isMissions（）”，“hasMissions（）”，“__ get（）”存在并且 在课堂上有公共访问权限 “Acme公司\ GroundStationBundle \实体\产品”。
Symfony2告诉您您必须在Mission和Product 实体之间设置关系。
尝试通过在对象中设置注释和属性来创建这些实体之间的oneToMany / manyToOne关系。我对注释不够熟练，但我能说出它在Yaml中会是什么样子：
# in Product:
oneToMany:
missions:
targetEntity: Mission
mappedBy: product
# in Mission:
manyToOne:
product:
targetEntity: Product
inversedBy: missions
joinColumn:
name: productId
referencedColumnName: id
在测试之前，不要忘记将对象更新为注释：
$ php app/console doctrine:generate:entities YourBundle:Product
$ php app/console doctrine:generate:entities YourBundle:Mission
然后，告诉我们评论中会发生什么。在我认为你工作之前，你将不得不做一些测试，但是你正在路上;）
答案 1 :(得分：2)
请查看我对您的代码所做的更改。
当您定义One（产品）ToMany（任务）关系时，您会遇到以下情况：
1。产品有许多任务，必须有一个任务的ArrayCollection，你可以添加，删除或获取所有任务。
class Product
{
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\OneToMany(targetEntity="Acme\ManagementBundle\Entity\Mission", mappedBy="product")
*/
// RENAME this attribute to plural. Product HAS MANY missions
// Than naming convention is "human readable" addMission and removeMission from collection but getMissions
protected $missions;
//...
//
// remove those functions:
public function setMission($mission)
//...
public function getMission()
//...
//
// add those functions:
public function __construct(){
$this->missions = new ArrayCollection();
}
public function addMission( Acme\ManagementBundle\Entity\Mission $mission )
{
$this->missions[] = $mission;
return $this;
}
public function removeMission( Acme\ManagementBundle\Entity\Mission $mission )
{
$this->missions->removeElement( $mission );
return $this;
}
public function getMissions()
{
return $this->missions;
}
//...
2. 许多MissionS归一个产品所有。仅更改注释
class Mission {
//...
// RENAME inversedBy to missions
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\ManyToOne(targetEntity="Acme\GroundStationBundle\Entity\Product", inversedBy="missions")
* @ORM\JoinColumn(name="productId", referencedColumnName= "id")
*/
private $product;
编辑开始
3。对面 - 许多产品属于一个任务 如果您在评论中提到的情况，那么您的注释是错误的。看看这个修复：
class Product
{
// ...
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\ManyToOne(targetEntity="Acme\GroundStationBundle\Entity\Mission", inversedBy="products")
* @ORM\JoinColumn(name="missionId", referencedColumnName= "id")
*/
protected $mission;
// ...
// roll back this functions:
public function setMission($mission)
public function getMission()
// remove those functions
public function __construct(){
public function addMission( Acme\ManagementBundle\Entity\Mission $mission )
public function removeMission( Acme\ManagementBundle\Entity\Mission $mission )
public function getMissions()
//...
class Mission {
// ...
/**
* @var \Doctrine\Common\Collections\ArrayCollection
*
* @ORM\OneToMany(targetEntity="Acme\ManagementBundle\Entity\Product", mappedBy="mission")
*/
private $products;
// ...
//
// remove those functions:
public function setProduct($product)
public function getProduct()
//...
//
// add those functions:
public function __construct(){
$this->products = new ArrayCollection();
}
public function addProduct( Acme\ManagementBundle\Entity\Product $product )
{
$this->products[] = $product;
return $this;
}
public function removeProduct( Acme\ManagementBundle\Entity\Product $product )
{
$this->products->removeElement( $product );
return $this;
}
public function geProducts()
{
return $this->products;
}
//...
编辑结束
3. 之后请记住：
$ php app/console doctrine:generate:entities AcmeGroundStationBundle:Product
$ php app/console doctrine:generate:entities AcmeGroundStationBundle:Mission
$ php app/console doctrine:schema:update --force
祝你好运！