ApiResponse.php

<?php

namespace App\CoreBundle\HttpFoundation;

use Doctrine\Common\Collections\Collection;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Validator\ConstraintViolationListInterface;

/**
 * @author Nikita Gusakov <dev@nkt.me>
 */
class ApiResponse extends Response
{
    public function __construct($data = null, $status = Response::HTTP_OK, array $headers = [])
    {
        if ($data instanceof ConstraintViolationListInterface) {
            $errors = [];
            foreach ($data as $error) {
                $errors[$error->getPropertyPath()] = $error->getMessage();
            }
            $data = $errors;
            $status = Response::HTTP_BAD_REQUEST;
        } elseif ($data instanceof Collection) {
            $data = $data->toArray();
        }
        $content = json_encode($data);
        if (json_last_error() !== JSON_ERROR_NONE) {
            throw new \InvalidArgumentException(json_last_error_msg());
        }
        $headers = array_replace(['Content-Type' => 'application/json'], $headers);
        parent::__construct($content, $status, $headers);
    }
}