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[github/wallabag/wallabag.git] / vendor / symfony / form / Symfony / Component / Form / Extension / Core / DataTransformer / ChoicesToValuesTransformer.php
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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
12namespace Symfony\Component\Form\Extension\Core\DataTransformer;
13
14use Symfony\Component\Form\Exception\TransformationFailedException;
15
16use Symfony\Component\Form\DataTransformerInterface;
17use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface;
18
19/**
20 * @author Bernhard Schussek <bschussek@gmail.com>
21 */
22class 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}