我有这两个实体：
事件：
class Event
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* @var string
*
* @ORM\Column(name="description", type="string", length=255)
*/
private $description;
/**
* @var boolean
*
* @ORM\Column(name="invitationPermission", type="boolean")
*/
private $invitationPermission;
/**
* @var \DateTime
*
* @ORM\Column(name="creationDate", type="date")
*/
private $creationDate;
/**
* @var \DateTime
*
* @ORM\Column(name="modifiedDate", type="date")
*/
private $modifiedDate;
/**
* @ORM\OneToMany(targetEntity="Users", mappedBy="id")
*/
private $user;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
* @return Event
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set description
*
* @param string $description
* @return Event
*/
public function setDescription($description)
{
$this->description = $description;
return $this;
}
/**
* Get description
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Set invitationPermission
*
* @param boolean $invitationPermission
* @return Event
*/
public function setInvitationPermission($invitationPermission)
{
$this->invitationPermission = $invitationPermission;
return $this;
}
/**
* Get invitationPermission
*
* @return boolean
*/
public function getInvitationPermission()
{
return $this->invitationPermission;
}
/**
* Set creationDate
*
* @param \DateTime $creationDate
* @return Event
*/
public function setCreationDate($creationDate)
{
$this->creationDate = $creationDate;
return $this;
}
/**
* Get creationDate
*
* @return \DateTime
*/
public function getCreationDate()
{
return $this->creationDate;
}
/**
* Set modifiedDate
*
* @param \DateTime $modifiedDate
* @return Event
*/
public function setModifiedDate($modifiedDate)
{
$this->modifiedDate = $modifiedDate;
return $this;
}
/**
* Get modifiedDate
*
* @return \DateTime
*/
public function getModifiedDate()
{
return $this->modifiedDate;
}
/**
* Set user
*
* @param user $user
* @return Event
*/
public function setUser($user)
{
$this->user = $user;
return $this;
}
/**
* Get user
*
* @return user
*/
public function getUser()
{
return $this->user;
}
和用户：
class Users
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="email", type="string", length=255)
*/
private $email;
/**
* @var string
*
* @ORM\Column(name="nick", type="string", length=255)
*/
private $nick;
/**
* @var string
*
* @ORM\Column(name="pwd", type="string", length=255)
*/
private $pwd;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set email
*
* @param string $email
* @return Users
*/
public function setEmail($email)
{
$this->email = $email;
return $this;
}
/**
* Get email
*
* @return string
*/
public function getEmail()
{
return $this->email;
}
/**
* Set nick
*
* @param string $nick
* @return Users
*/
public function setNick($nick)
{
$this->nick = $nick;
return $this;
}
/**
* Get nick
*
* @return string
*/
public function getNick()
{
return $this->nick;
}
/**
* Set pwd
*
* @param string $pwd
* @return Users
*/
public function setPwd($pwd)
{
$this->pwd = $pwd;
return $this;
}
/**
* Get pwd
*
* @return string
*/
public function getPwd()
{
return $this->pwd;
}
}
我尝试获取一个事件，然后通过事件，获取用户，然后是昵称：
$event = $em->getRepository('MyBundle:Event')->findOneById(1);
print_r($event->getUser()->getNickname());
我得到：
Fatal error: Call to undefined method Doctrine\ORM\PersistentCollection::getNickname() in C:\xampp\htdocs\web\src\KNV\MyBundle\Controller\DefaultController.php on line 43
任何想法？
但是，如果我打印它的结果，getUser()它会返回大量数据（大多数与 symfony 框架相关）。