ResolveTargetEntityListener examples

config.yml

# ....

# app/config/config.yml

doctrine:
    # ....
    orm:
        # ....
        resolve_target_entities:
            Acme\InvoiceBundle\Model\InvoiceSubjectInterface: Acme\AppBundle\Entity\Customer

# ....

Customer.php

<?php

// src/Acme/AppBundle/Entity/Customer.php

namespace Acme\AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Acme\CustomerBundle\Entity\Customer as BaseCustomer;
use Acme\InvoiceBundle\Model\InvoiceSubjectInterface;

/**
 * @ORM\Entity
 * @ORM\Table(name="customer")
 */
class Customer extends BaseCustomer implements InvoiceSubjectInterface
{
    // In our example, any methods defined in the InvoiceSubjectInterface
    // are already implemented in the BaseCustomer
}

Invoice.php

<?php

// src/Acme/InvoiceBundle/Entity/Invoice.php

namespace Acme\InvoiceBundle\Entity;

use Doctrine\ORM\Mapping AS ORM;
use Acme\InvoiceBundle\Model\InvoiceSubjectInterface;

/**
 * Represents an Invoice.
 *
 * @ORM\Entity
 * @ORM\Table(name="invoice")
 */
class Invoice
{
    /**
     * @ORM\ManyToOne(targetEntity="Acme\InvoiceBundle\Model\InvoiceSubjectInterface")
     * @var InvoiceSubjectInterface
     */
    protected $subject;
}

InvoiceSubjectInterface.php

<?php

// src/Acme/InvoiceBundle/Model/InvoiceSubjectInterface.php

namespace Acme\InvoiceBundle\Model;

/**
 * An interface that the invoice Subject object should implement.
 * In most circumstances, only a single object should implement
 * this interface as the ResolveTargetEntityListener can only
 * change the target to a single object.
 *
 * @author Tim Nagel <tim@nagel.com.au>
 */
interface InvoiceSubjectInterface
{
    // List any additional methods that your InvoiceBundle
    // will need to access on the subject so that you can
    // be sure that you have access to those methods.

    /**
     * @return string
     */
    public function getName();
}