Request errors serialization bundle

Bundle provides simple serialization for symfony form errors in JSON REST API.

Installation

1. Install component via composer

composer require 4xxi/rest-request-errors

Usage

For Symfony forms:

use Fourxxi\RestRequestError\Exception\FormInvalidRequestException;

if (!$form->isValid()) {
    throw new FormInvalidRequestException($form);
}

For custom errors array:

use Fourxxi\RestRequestError\Exception\ArrayInvalidRequestException;

throw new ArrayInvalidRequestException([
    'field1' => 'errorValue',
    'field2' => 'someAnotherError'
]);

Examples above produces response:

{
  "errors": [
    
  ],
  "children": {
    "username": {
      "errors": [
        "Some error for form field"
      ],
      "children": []
    }
  }
}

If your application doesn't have exception listener, you can use bundle provided exception listener.

To enable it, add configuration yaml into config/packages/rest_request_error.yaml with following content:

rest_request_error:
  use_exception_listener: true

Decorating normalizer

If you want to modify errors response payload, you can decorate bundle normalizer with your own

Add to services.yaml decorate service

App\Serializer\CustomExceptionNormalizer:
    decorates: Fourxxi\RestRequestError\Serializer\InvalidRequestExceptionNormalizer
    arguments:
        - '@App\Serializer\CustomExceptionNormalizer.inner'

And create own decorator class:

final class CustomExceptionNormalizer implements NormalizerInterface
{
    /**
     * @var NormalizerInterface
     */
    private $normalizer;

    public function __construct(NormalizerInterface $normalizer)
    {
        $this->normalizer = $normalizer;
    }

    /**
     * @param InvalidRequestExceptionInterface $object
     */
    public function normalize($object, string $format = null, array $context = [])
    {
        $normalized = $this->normalizer->normalize($object, $format, $context);
        $normalized['code'] = $object->getStatusCode();

        return $normalized;
    }

    public function supportsNormalization($data, string $format = null)
    {
        return $this->normalizer->supportsNormalization($data, $format);
    }
}

Result:

{
  "errors": [],
  "children": {
    "test": {
      "errors": [
        "foo"
      ],
      "children": []
    }
  },
  "code": 400
}