FormErrorNormalizer.php

<?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\Serializer\Normalizer;

use Symfony\Component\Form\FormInterface;

/**
 * Normalizes invalid Form instances.
 */
final class FormErrorNormalizer implements NormalizerInterface {
    public const TITLE = 'title';
    public const TYPE = 'type';
    public const CODE = 'status_code';
    public function normalize(mixed $object, ?string $format = null, array $context = []) : array {
        $data = [
            'title' => $context[self::TITLE] ?? 'Validation Failed',
            'type' => $context[self::TYPE] ?? 'https://symfony.com/errors/form',
            'code' => $context[self::CODE] ?? null,
            'errors' => $this->convertFormErrorsToArray($object),
        ];
        if (0 !== \count($object->all())) {
            $data['children'] = $this->convertFormChildrenToArray($object);
        }
        return $data;
    }
    public function getSupportedTypes(?string $format) : array {
        return [
            FormInterface::class => false,
        ];
    }
    public function supportsNormalization(mixed $data, ?string $format = null, array $context = []) : bool {
        return $data instanceof FormInterface && $data->isSubmitted() && !$data->isValid();
    }
    private function convertFormErrorsToArray(FormInterface $data) : array {
        $errors = [];
        foreach ($data->getErrors() as $error) {
            $errors[] = [
                'message' => $error->getMessage(),
                'cause' => $error->getCause(),
            ];
        }
        return $errors;
    }
    private function convertFormChildrenToArray(FormInterface $data) : array {
        $children = [];
        foreach ($data->all() as $child) {
            $childData = [
                'errors' => $this->convertFormErrorsToArray($child),
            ];
            if ($child->all()) {
                $childData['children'] = $this->convertFormChildrenToArray($child);
            }
            $children[$child->getName()] = $childData;
        }
        return $children;
    }

}