vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ArrayToPartsTransformer.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\DataTransformerInterface;
  15 use Symfony\Component\Form\Exception\TransformationFailedException;
  16
  17 /**
  18  * @author Bernhard Schussek <bschussek@gmail.com>
  19  */
  20 class ArrayToPartsTransformer implements DataTransformerInterface
  21 {
  22     private $partMapping;
  23
  24     public function __construct(array $partMapping)
  25     {
  26         $this->partMapping = $partMapping;
  27     }
  28
  29     public function transform($array)
  30     {
  31         if (null === $array) {
  32             $array = array();
  33         }
  34
  35         if (!is_array($array) ) {
  36             throw new TransformationFailedException('Expected an array.');
  37         }
  38
  39         $result = array();
  40
  41         foreach ($this->partMapping as $partKey => $originalKeys) {
  42             if (empty($array)) {
  43                 $result[$partKey] = null;
  44             } else {
  45                 $result[$partKey] = array_intersect_key($array, array_flip($originalKeys));
  46             }
  47         }
  48
  49         return $result;
  50     }
  51
  52     public function reverseTransform($array)
  53     {
  54         if (!is_array($array) ) {
  55             throw new TransformationFailedException('Expected an array.');
  56         }
  57
  58         $result = array();
  59         $emptyKeys = array();
  60
  61         foreach ($this->partMapping as $partKey => $originalKeys) {
  62             if (!empty($array[$partKey])) {
  63                 foreach ($originalKeys as $originalKey) {
  64                     if (isset($array[$partKey][$originalKey])) {
  65                         $result[$originalKey] = $array[$partKey][$originalKey];
  66                     }
  67                 }
  68             } else {
  69                 $emptyKeys[] = $partKey;
  70             }
  71         }
  72
  73         if (count($emptyKeys) > 0) {
  74             if (count($emptyKeys) === count($this->partMapping)) {
  75                 // All parts empty
  76                 return null;
  77             }
  78
  79             throw new TransformationFailedException(
  80                 sprintf('The keys "%s" should not be empty', implode('", "', $emptyKeys)
  81             ));
  82         }
  83
  84         return $result;
  85     }
  86 }