vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ChoicesToValuesTransformer.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\DataTransformer;
  13
  14 use Symfony\Component\Form\Exception\TransformationFailedException;
  15
  16 use Symfony\Component\Form\DataTransformerInterface;
  17 use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface;
  18
  19 /**
  20  * @author Bernhard Schussek <bschussek@gmail.com>
  21  */
  22 class ChoicesToValuesTransformer implements DataTransformerInterface
  23 {
  24     private $choiceList;
  25
  26     /**
  27      * Constructor.
  28      *
  29      * @param ChoiceListInterface $choiceList
  30      */
  31     public function __construct(ChoiceListInterface $choiceList)
  32     {
  33         $this->choiceList = $choiceList;
  34     }
  35
  36     /**
  37      * @param array $array
  38      *
  39      * @return array
  40      *
  41      * @throws TransformationFailedException If the given value is not an array.
  42      */
  43     public function transform($array)
  44     {
  45         if (null === $array) {
  46             return array();
  47         }
  48
  49         if (!is_array($array)) {
  50             throw new TransformationFailedException('Expected an array.');
  51         }
  52
  53         return $this->choiceList->getValuesForChoices($array);
  54     }
  55
  56     /**
  57      * @param array $array
  58      *
  59      * @return array
  60      *
  61      * @throws TransformationFailedException If the given value is not an array
  62      *                                       or if no matching choice could be
  63      *                                       found for some given value.
  64      */
  65     public function reverseTransform($array)
  66     {
  67         if (null === $array) {
  68             return array();
  69         }
  70
  71         if (!is_array($array)) {
  72             throw new TransformationFailedException('Expected an array.');
  73         }
  74
  75         $choices = $this->choiceList->getChoicesForValues($array);
  76
  77         if (count($choices) !== count($array)) {
  78             throw new TransformationFailedException('Could not find all matching choices for the given values');
  79         }
  80
  81         return $choices;
  82     }
  83 }