vendor/symfony/form/Symfony/Component/Form/Extension/Core/EventListener/FixRadioInputListener.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Form\Extension\Core\EventListener;
  13
  14 use Symfony\Component\Form\FormEvents;
  15 use Symfony\Component\Form\FormEvent;
  16 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  17 use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface;
  18
  19 /**
  20  * Takes care of converting the input from a single radio button
  21  * to an array.
  22  *
  23  * @author Bernhard Schussek <bschussek@gmail.com>
  24  */
  25 class FixRadioInputListener implements EventSubscriberInterface
  26 {
  27     private $choiceList;
  28
  29     private $placeholderPresent;
  30
  31     /**
  32      * Constructor.
  33      *
  34      * @param ChoiceListInterface $choiceList
  35      * @param Boolean             $placeholderPresent
  36      */
  37     public function __construct(ChoiceListInterface $choiceList, $placeholderPresent)
  38     {
  39         $this->choiceList = $choiceList;
  40         $this->placeholderPresent = $placeholderPresent;
  41     }
  42
  43     public function preSubmit(FormEvent $event)
  44     {
  45         $value = $event->getData();
  46         $index = current($this->choiceList->getIndicesForValues(array($value)));
  47
  48         $event->setData(false !== $index ? array($index => $value) : ($this->placeholderPresent ? array('placeholder' => '') : array()))   ;
  49     }
  50
  51     /**
  52      * Alias of {@link preSubmit()}.
  53      *
  54      * @deprecated Deprecated since version 2.3, to be removed in 3.0. Use
  55      *             {@link preSubmit()} instead.
  56      */
  57     public function preBind(FormEvent $event)
  58     {
  59         $this->preSubmit($event);
  60     }
  61
  62     public static function getSubscribedEvents()
  63     {
  64         return array(FormEvents::PRE_SUBMIT => 'preSubmit');
  65     }
  66 }