/
EntitiesToArrayTransformer.php
104 lines (86 loc) · 3.09 KB
/
EntitiesToArrayTransformer.php
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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\Bridge\Doctrine\Form\DataTransformer;
use Symfony\Bridge\Doctrine\Form\ChoiceList\EntityChoiceList;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\Form\Exception\TransformationFailedException;
use Symfony\Component\Form\DataTransformerInterface;
use Doctrine\Common\Collections\Collection;
use Doctrine\Common\Collections\ArrayCollection;
class EntitiesToArrayTransformer implements DataTransformerInterface
{
private $choiceList;
public function __construct(EntityChoiceList $choiceList)
{
$this->choiceList = $choiceList;
}
/**
* Transforms entities into choice keys
*
* @param Collection|object $collection A collection of entities, a single entity or
* NULL
* @return mixed An array of choice keys, a single key or NULL
*/
public function transform($collection)
{
if (null === $collection) {
return array();
}
if (!($collection instanceof Collection)) {
throw new UnexpectedTypeException($collection, 'Doctrine\Common\Collections\Collection');
}
$array = array();
if (count($this->choiceList->getIdentifier()) > 1) {
// load all choices
$availableEntities = $this->choiceList->getEntities();
foreach ($collection as $entity) {
// identify choices by their collection key
$key = array_search($entity, $availableEntities);
$array[] = $key;
}
} else {
foreach ($collection as $entity) {
$value = current($this->choiceList->getIdentifierValues($entity));
$array[] = is_numeric($value) ? (int) $value : $value;
}
}
return $array;
}
/**
* Transforms choice keys into entities
*
* @param mixed $keys An array of keys, a single key or NULL
* @return Collection|object A collection of entities, a single entity
* or NULL
*/
public function reverseTransform($keys)
{
$collection = new ArrayCollection();
if ('' === $keys || null === $keys) {
return $collection;
}
if (!is_array($keys)) {
throw new UnexpectedTypeException($keys, 'array');
}
$notFound = array();
// optimize this into a SELECT WHERE IN query
foreach ($keys as $key) {
if ($entity = $this->choiceList->getEntity($key)) {
$collection->add($entity);
} else {
$notFound[] = $key;
}
}
if (count($notFound) > 0) {
throw new TransformationFailedException(sprintf('The entities with keys "%s" could not be found', implode('", "', $notFound)));
}
return $collection;
}
}