CODEWITHSUNDEEP
symfonydoctrinedoctrine-orm
jonfer
jonfer

Reputation: 1564

Doctrine2 Many-to-one bidirectional relationship not working

I'm trying to do a bidirectional association between 2 entities. The problem is that from Book I can get their Owner, but from Owner I can't get the books owned.

Here is the important part of the code:

Acme\BookBundle\Entity\Book;

/**
 * @ORM\ManyToOne(targetEntity="Acme\UserBundle\Entity\User", inversedBy="owned_books")
 * @ORM\JoinColumn(name="owner_id", referencedColumnName="id")
 */
protected $owner;

/**
 * Get owner
 *
 * @return Acme\UserBundle\Entity\User 
 */
public function getOwner()
{
    return $this->owner;
}

Acme\UserBundle\Entity\User;

/**
 * @ORM\OneToMany(targetEntity="Acme\BookBundle\Entity\Book", mappedBy="owner")
 */
protected $owned_books;

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

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

Then, to get the data:

This Works

$book = $this->getDoctrine()
  ->getRepository('BookBundle:Book')
  ->find(1);

$owner = $book->getOwner()->getFirstName();

This Doesn't work ( Gives Fatal error: Call to undefined method Doctrine\ORM\PersistentCollection::getName() )

$owner = $this->getDoctrine()
    ->getRepository('UserBundle:User')
    ->find(1);

$books = $owner->getOwnedBooks()->getName();

Does anyone know what I'm doing wrong? Thank you in advance.

Upvotes: 3

Views: 6581

Answers (2)

Niborb
Niborb

Reputation: 784

$owner->getOwnedBooks() is a collection of Owners. Try to loop through the collection with a foreach loop.

$books = $owner->getOwnedBooks();
foreach ($books as $book) {
    echo $book->getName() . ' <br/>';
}

Upvotes: 10

greg0ire
greg0ire

Reputation: 23265

The error message is pretty clear: you're trying to get the name of a collection of book, instead of trying to get the name of a single book.

Upvotes: 3

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