* * 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\Exception\TransformationFailedException; use Symfony\Component\Form\DataTransformerInterface; use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface; /** * @author Bernhard Schussek */ class ChoicesToValuesTransformer implements DataTransformerInterface { private $choiceList; /** * Constructor. * * @param ChoiceListInterface $choiceList */ public function __construct(ChoiceListInterface $choiceList) { $this->choiceList = $choiceList; } /** * @param array $array * * @return array * * @throws TransformationFailedException If the given value is not an array. */ public function transform($array) { if (null === $array) { return array(); } if (!is_array($array)) { throw new TransformationFailedException('Expected an array.'); } return $this->choiceList->getValuesForChoices($array); } /** * @param array $array * * @return array * * @throws TransformationFailedException If the given value is not an array * or if no matching choice could be * found for some given value. */ public function reverseTransform($array) { if (null === $array) { return array(); } if (!is_array($array)) { throw new TransformationFailedException('Expected an array.'); } $choices = $this->choiceList->getChoicesForValues($array); if (count($choices) !== count($array)) { throw new TransformationFailedException('Could not find all matching choices for the given values'); } return $choices; } }