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@enleur
Last active May 18, 2022 10:31
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Symfony json body to request object auto mapping
<?php
namespace App\Request\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Validator\ConstraintViolationListInterface;
final class ConstraintViolationsConverter implements ParamConverterInterface
{
/**
* @param Request $request
* @param ParamConverter $configuration
*
* @return bool|void
*/
public function apply(Request $request, ParamConverter $configuration)
{
$violations = $request->attributes->get('_violations');
$request->attributes->remove('_violations');
$request->attributes->set($configuration->getName(), $violations);
}
/**
* @param ParamConverter $configuration
*
* @return bool
*/
public function supports(ParamConverter $configuration)
{
return ConstraintViolationListInterface::class === $configuration->getClass();
}
}
<?php
namespace App\Controller;
final class ExampleController extends AbstractController
{
public function registerAction(
RegistrationRequest $registrationRequest,
ConstraintViolationListInterface $violations,
Registration $registration
): Response {
if ($violations->count() > 0) {
return $this->validationError($violations);
}
//...
return $this->json(..);
}
}
<?php
namespace App\Request\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Serializer\SerializerInterface;
use Symfony\Component\Validator\Validator\ValidatorInterface;
final class JsonBodySerializableConverter implements ParamConverterInterface
{
/**
* @var SerializerInterface
*/
private $serializer;
/**
* @var ValidatorInterface
*/
private $validator;
/**
* @param SerializerInterface $serializer
* @param ValidatorInterface $validator
*/
public function __construct(SerializerInterface $serializer, ValidatorInterface $validator)
{
$this->serializer = $serializer;
$this->validator = $validator;
}
/**
* @param Request $request
* @param ParamConverter $configuration
*
* @return bool|void
*/
public function apply(Request $request, ParamConverter $configuration)
{
$body = $request->getContent();
$obj = $this->serializer->deserialize($body, $configuration->getClass(), 'json');
$violationList = $this->validator->validate($obj);
$request->attributes->set('_violations', $violationList);
$request->attributes->set($configuration->getName(), $obj);
}
/**
* @param ParamConverter $configuration
*
* @return bool
*/
public function supports(ParamConverter $configuration)
{
$class = $configuration->getClass();
if (!is_string($class)) {
return false;
}
return in_array(JsonBodySerializableInterface::class, class_implements($class));
}
}
<?php
namespace App\Request;
use App\Request\ParamConverter\JsonBodySerializableInterface;
use Symfony\Component\Serializer\Normalizer\DenormalizableInterface;
use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
use Symfony\Component\Validator\Constraints as Assert;
final class RegistrationRequest implements JsonBodySerializableInterface
{
/**
* @Assert\NotBlank
* @Assert\Type("string")
*
* @var string
*/
public $username;
/**
* @Assert\NotBlank
* @Assert\Type("string")
*
* @var string
*/
public $email;
}
@raitocz
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raitocz commented Jan 20, 2021

both JsonBodySerializableInterface is missing but thanks for sharing the converters anyway

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