Symfony2 OneToMany关系
我正在使用Symfony 2.5和PHP5.3做一个AdvertPlatform。
我想添加一个功能，即:当用户看到(通过点击它)一个广告，我们可以看到一个文本"Seen by : {{username}}"。
我开始添加一个名为AdvertReader的新实体，它在Advert和AdvertReader之间有一个关系OneToMany
Advert.php：
/**
* Advert
*
* @ORM\Table()
* @ORM\Entity(repositoryClass="Society\PerfclientBundle\Entity\AdvertRepository")
* @ORM\HasLifecycleCallbacks()
* @UniqueEntity(fields="title", message="Une annonce existe déjà avec ce titre.")
*/
class Advert
{
public function __construct()
{
$this->date = new \Datetime();
}
/**
*
* @ORM\OneToMany(targetEntity="Society\PerfclientBundle\Entity\AdvertReader", mappedBy="advert", cascade={"persist"})
*/
private $readers;
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var \DateTime
*
* @ORM\Column(name="date", type="datetime")
*/
private $date;
/**
* @var string
*
* @ORM\Column(name="title", type="string", length=255, unique=true)
*
* @Assert\Length(min=10, minMessage="Le titre de l'annonce doit faire au moins {{ limit }} caractères.")
*/
private $title;
/**
* @var string
*
* @ORM\Column(name="category", type="string", length=255)
*/
private $category;
/**
* @var string
*
* @ORM\Column(name="author", type="string", length=255)
*/
private $author;
/**
* @var string
*
* @ORM\Column(name="content", type="text")
* @Assert\Length(min=10, minMessage="Le contenu de l'annonce doit faire au moins {{ limit }} caractères.")
*/
private $content;
/**
* @ORM\Column(name="updated_at", type="datetime", nullable=true)
*/
private $updatedAt;`AdvertReader.php：
/**
* AdvertReader
*
* @ORM\Table()
* @ORM\Entity
*/
class AdvertReader
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\ManyToOne(targetEntity="Society\PerfclientBundle\Entity\Advert", inversedBy="readers")
* @ORM\JoinColumn(name="advert_id", referencedColumnName="id")
*/
private $advert;
/**
* @var string
*
* @ORM\Column(name="username", type="string", length=255)
*/
private $username;
/**
* @var \DateTime
*
* @ORM\Column(name="created_at", type="datetime")
*/
private $createdAt;
/**
* @var \DateTime
*
* @ORM\Column(name="updated_at", type="datetime")
*/
private $updatedAt;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set advert
*
* @param integer $advert
* @return AdvertReader
*/
public function setAdvert($advert)
{
$this->advert = $advert;
return $this;
}
/**
* Get advert
*
* @return integer
*/
public function getAdvert()
{
return $this->advert;
}
/**
* Set username
*
* @param string $username
* @return AdvertReader
*/
public function setUsername($username)
{
$this->username = $username;
return $this;
}
/**
* Get username
*
* @return string
*/
public function getUsername()
{
return $this->username;
}和我的viewAction()
/**
* @param $id
* @return Response
*/
public function viewAction($id)
{
// On récupère le repository
$repository = $this->getDoctrine()
->getManager()
->getRepository('SocietyPerfclientBundle:Advert')
;
$advert = $repository->find($id);
if (null === $advert) {
throw new NotFoundHttpException("L'annonce d'id ".$id." n'existe pas.");
}
$securityContext = $this->container->get('security.context');
$user = $securityContext->getToken()->getUser();
if ($securityContext->isGranted('IS_AUTHENTICATED_FULLY')) {
$em = $this->getDoctrine()->getManager();
$queryBuilder = $em->createQueryBuilder();
$query = $queryBuilder->select('count(ar.id)')
->from('SocietyPerfclientBundle:AdvertReader', 'ar')
->where('ar.advert = :advert')
->andWhere('ar.username = :username')
->setParameter('advert', $advert->getId())
->setParameter('username', $user->getUsername())
->getQuery();
$advertReaderCount = $query->getSingleScalarResult();
if ($advertReaderCount <= 0) {
// l'utilisateur lis pour la 1er fois
$advertReader = new AdvertReader;
$advertReader->setAdvert($advert->getId());
$advertReader->setUpdatedAt(new \DateTime);
$advertReader->setUsername($user->getUsername());
$advertReader->setCreatedAt(new \DateTime);
$em->persist($advertReader);
$em->flush();
}
}
return $this->render('SocietyPerfclientBundle:Default:view.html.twig', array(
'advert' => $advert,
));
}原则:模式:验证->映射OK数据库OK
Society\PerfclientBundle\Entity\AdvertReader#advert，异常:在关联Error500上发现类型实体但期望社会\PerfclientBundle\ entity \Error500 堆栈跟踪探查器: UnitOfWork ->computeAssociationChanges (数组(‘fieldName’=>‘副词’)、'joinColumns‘=>数组(数组(’名称‘=>’副词_id‘)、’唯一‘=> false’、'nullable‘=> true、'onDelete’=>空、'columnDefinition‘=> null、'referencedColumnName’=>‘id’)、级联‘=>数组()、'inversedBy’=>‘读取器’、‘=>’en19#‘Society\PerfclientBundle\en副词’、'fetch‘#20#’2‘、'type’en21# '2'，'mappedBy‘=> null，'isOwningSide’=> true，'sourceEntity‘=> isCascadeRemove 'isCascadeRemove’=> false，'isCascadePersist‘=> false，'isCascadeRefresh’=> false，'isCascadeMerge‘=> false，'isCascadeDetach’=> false，‘isCascadeMerge’=> false，‘isCascadeDetach’=> false( 'id')，‘’数组(‘#’)，‘数组(’id‘en28#’)，‘en30#’，‘’en23#‘’)，“26”)
我的实体关系怎么了？请帮助我:)
回答 1
Stack Overflow用户
发布于 2017-09-01 10:46:10
我认为问题来自于这段代码
$advertReader->setAdvert($advert->getId());试一试：
$advertReader->setAdvert($advert);教条是期待在这种关系上的对象，而不是你传递一些整数。
希望这能有所帮助。快乐编码
亚历山德鲁·科斯
https://stackoverflow.com/questions/45997783
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