Indice non definito sulla dottrina m: n relazione

Question

Ho un 'dipartimento' e 'newsItem', che sono correlati m: n. Ogni volta che provo ad elencare sopra NewsItems di un reparto, innescando così il recupero dal db, ottengo questo errore:

 
at ErrorHandler ->handle (
    '8', 
    'Undefined index: newsItems', 
    '/.../ufscar_symfony/vendor/doctrine/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php', 
    '807', 
    array(
    'assoc' => array(
     'fieldName' => 'newsItems', 
     'joinTable' => array(), 
     'targetEntity' => 'UfscarDfmc\OrgBundle\Entity\NewsItem', 
     'mappedBy' => 'newsItems', 
     'inversedBy' => null, 
     'cascade' => array(), 
     'fetch' => '2', 
     'type' => '8', 
     'isOwningSide' => false, 
     'sourceEntity' => 'UfscarDfmc\OrgBundle\Entity\Department', 
     'isCascadeRemove' => false, 
     'isCascadePersist' => false, 
     'isCascadeRefresh' => false, 
     'isCascadeMerge' => false, 
     'isCascadeDetach' => false 
    ), 
    'sourceEntity' => object(Department), 
    'offset' => null, 
    'limit' => null, 
    'criteria' => array(), 
    'sourceClass' => object(ClassMetadata) 
) 
) 

Qual è particolarmente strano è, che c'è un altro rapporto in reparto, ad un altro m: n entità, che funziona e non c'è differenza nel modo in cui è stata impostata la mappatura, ho controllato almeno 10 volte.

Le classi e la piena stacktrace:

 /** 
* @ORM\Table() 
* @ORM\Entity(repositoryClass="...\OrgBundle\Entity\DepartmentRepository") 
*/ 
class Department 
{ 
     /** 
    * Inverse Side 
    * 
    * @ManyToMany(targetEntity="NewsItem", mappedBy="newsItems") 
    */ 
    private $newsItems; 

    public function __construct() 
    { 
     $this->newsItems = new \Doctrine\Common\Collections\ArrayCollection(); 
    } 
    /** 
    * Get newsItems 
    * 
    * @return Doctrine\Common\Collections\Collection 
    */ 
    public function getNewsItems() 
    { 
     return $this->newsItems; 
    } 
} 


class NewsItem 
{ 
    /** 
    * Owning Side 
    * 
    * @ManyToMany(targetEntity="Department", inversedBy="newsItems") 
    * @JoinTable(name="newsItems_departments", 
    *  joinColumns={@JoinColumn(name="newsItem_id", referencedColumnName="id")}, 
    *  inverseJoinColumns={@JoinColumn(name="department_id", referencedColumnName="id")} 
    *  ) 
    */ 
    private $departments; 

    public function __construct(){ 
     $this->departments = new \Doctrine\Common\Collections\ArrayCollection(); 
    } 

    /** 
    * Get departments 
    * 
    * @return Doctrine\Common\Collections\Collection 
    */ 
    public function getDepartments() 
    { 
     return $this->departments; 
    } 
} 


public function showAction($slug) 
{ 
    $em = $this->getDoctrine()->getEntityManager(); 
    $entity = $em->getRepository('UfscarDfmcOrgBundle:Department')->findOneBySlug($slug); 

    return array(
     'entity' => $entity, 
     'newsItems' => $entity->getNewsItems(), # enumerating over this gives the error 
    ); 
} 

 
at ErrorHandler ->handle ('8', 'Undefined index: newsItems', '/.../vendor/doctrine/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php', '807', array('assoc' => array('fieldName' => 'newsItems', 'joinTable' => array(), 'targetEntity' => 'UfscarDfmc\OrgBundle\Entity\NewsItem', 'mappedBy' => 'newsItems', 'inversedBy' => null, 'cascade' => array(), 'fetch' => '2', 'type' => '8', 'isOwningSide' => false, 'sourceEntity' => 'UfscarDfmc\OrgBundle\Entity\Department', 'isCascadeRemove' => false, 'isCascadePersist' => false, 'isCascadeRefresh' => false, 'isCascadeMerge' => false, 'isCascadeDetach' => false), 'sourceEntity' => object(Department), 'offset' => null, 'limit' => null, 'criteria' => array(), 'sourceClass' => object(ClassMetadata))) 
in /.../vendor/doctrine/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php at line 807 
at BasicEntityPersister ->getManyToManyStatement (array('fieldName' => 'newsItems', 'joinTable' => array(), 'targetEntity' => 'UfscarDfmc\OrgBundle\Entity\NewsItem', 'mappedBy' => 'newsItems', 'inversedBy' => null, 'cascade' => array(), 'fetch' => '2', 'type' => '8', 'isOwningSide' => false, 'sourceEntity' => 'UfscarDfmc\OrgBundle\Entity\Department', 'isCascadeRemove' => false, 'isCascadePersist' => false, 'isCascadeRefresh' => false, 'isCascadeMerge' => false, 'isCascadeDetach' => false), object(Department)) 
in /.../vendor/doctrine/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php at line 778 
at BasicEntityPersister ->loadManyToManyCollection (array('fieldName' => 'newsItems', 'joinTable' => array(), 'targetEntity' => 'UfscarDfmc\OrgBundle\Entity\NewsItem', 'mappedBy' => 'newsItems', 'inversedBy' => null, 'cascade' => array(), 'fetch' => '2', 'type' => '8', 'isOwningSide' => false, 'sourceEntity' => 'UfscarDfmc\OrgBundle\Entity\Department', 'isCascadeRemove' => false, 'isCascadePersist' => false, 'isCascadeRefresh' => false, 'isCascadeMerge' => false, 'isCascadeDetach' => false), object(Department), object(PersistentCollection)) 
in /.../vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php at line 2088  
at UnitOfWork ->loadCollection (object(PersistentCollection)) 
in /.../vendor/doctrine/lib/Doctrine/ORM/PersistentCollection.php at line 207  
at PersistentCollection ->initialize() 
in /.../vendor/doctrine/lib/Doctrine/ORM/PersistentCollection.php at line 474  
at PersistentCollection ->count() 
in at line  
at count (object(PersistentCollection)) 
in /.../src/UfscarDfmc/OrgBundle/Controller/DepartmentController.php at line 53  
at DepartmentController ->showAction ('graduacao') 
in at line 

Answer 1

Se ho ragione ...

tuo mappedBy presso il Dipartimento di classe dovrebbe essere la proprietà della classe NewsItem, nei vostri reparti caso al posto di NewsItems.

Answer 2

Siete probabilmente manca qualcosa nelle vostre annotazioni di funzione .. un'occhiata a questo:

http://www.doctrine-project.org/docs/orm/2.0/en/reference/association-mapping.html#many-to-many-bidirectional

vi pare manca la notazione @JoinTable - forse prova ad invertire il lato Owning e Inverse?

Answer 3

Sto riscontrando lo stesso problema e le risposte su StackOverflow mentre sono corrette non vanno abbastanza in profondità. Ho trovato in uno dei Doctrine jira issues:

Se si esegue

doctrine:schema:validate 

allora vi dirà qual è il problema.