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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\Core\DataTransformer;
use Symfony\Component\Form\DataTransformerInterface;
use Symfony\Component\Form\Exception\TransformationFailedException;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
/**
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class ArrayToPartsTransformer implements DataTransformerInterface
{
private $partMapping;
public function __construct(array $partMapping)
{
$this->partMapping = $partMapping;
}
public function transform($array)
{
if (null === $array) {
$array = array();
}
if (!is_array($array) ) {
throw new UnexpectedTypeException($array, 'array');
}
$result = array();
foreach ($this->partMapping as $partKey => $originalKeys) {
if (empty($array)) {
$result[$partKey] = null;
} else {
$result[$partKey] = array_intersect_key($array, array_flip($originalKeys));
}
}
return $result;
}
public function reverseTransform($array)
{
if (!is_array($array) ) {
throw new UnexpectedTypeException($array, 'array');
}
$result = array();
$emptyKeys = array();
foreach ($this->partMapping as $partKey => $originalKeys) {
if (!empty($array[$partKey])) {
foreach ($originalKeys as $originalKey) {
if (isset($array[$partKey][$originalKey])) {
$result[$originalKey] = $array[$partKey][$originalKey];
}
}
} else {
$emptyKeys[] = $partKey;
}
}
if (count($emptyKeys) > 0) {
if (count($emptyKeys) === count($this->partMapping)) {
// All parts empty
return null;
}
throw new TransformationFailedException(
sprintf('The keys "%s" should not be empty', implode('", "', $emptyKeys)
));
}
return $result;
}
}
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