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EnsureCsrfFieldListener.php
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EnsureCsrfFieldListener.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form\Extension\Csrf\EventListener;
use Symfony\Component\Form\Event\DataEvent;
use Symfony\Component\Form\Extension\Csrf\CsrfProvider\CsrfProviderInterface;
use Symfony\Component\Form\FormFactoryInterface;
/**
* Ensures the CSRF field.
*
* @author Bulat Shakirzyanov <mallluhuct@gmail.com>
* @author Kris Wallsmith <kris@symfony.com>
*/
class EnsureCsrfFieldListener
{
private $factory;
private $name;
private $intention;
private $provider;
/**
* Constructor.
*
* @param FormFactoryInterface $factory The form factory
* @param string $name A name for the CSRF field
* @param string $intention The intention string
* @param CsrfProviderInterface $provider The CSRF provider
*/
public function __construct(FormFactoryInterface $factory, $name, $intention = null, CsrfProviderInterface $provider = null)
{
$this->factory = $factory;
$this->name = $name;
$this->intention = $intention;
$this->provider = $provider;
}
/**
* Ensures a root form has a CSRF field.
*
* This method should be connected to both form.pre_set_data and form.pre_bind.
*/
public function ensureCsrfField(DataEvent $event)
{
$form = $event->getForm();
$options = array();
if ($this->intention) {
$options['intention'] = $this->intention;
}
if ($this->provider) {
$options['csrf_provider'] = $this->provider;
}
$form->add($this->factory->createNamed('csrf', $this->name, null, $options));
}
}