Symfony Profiler

<?php
/*
* This file is part of the FOSRestBundle package.
*
* (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FOS\RestBundle\View;
use FOS\RestBundle\Context\Context;
use FOS\RestBundle\Serializer\Serializer;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\UnsupportedMediaTypeHttpException;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
/**
* View may be used in controllers to build up a response in a format agnostic way
* The View class takes care of encoding your data in json, xml via the Serializer
* component.
*
* @author Jordi Boggiano <j.boggiano@seld.be>
* @author Lukas K. Smith <smith@pooteeweet.org>
*/
final class ViewHandler implements ConfigurableViewHandlerInterface
{
/**
* Key format, value a callable that returns a Response instance.
*
* @var array
*/
private $customHandlers = [];
/**
* The supported formats as keys.
*
* @var array
*/
private $formats;
private $failedValidationCode;
private $emptyContentCode;
private $serializeNull;
private $exclusionStrategyGroups = [];
private $exclusionStrategyVersion;
private $serializeNullStrategy;
private $urlGenerator;
private $serializer;
private $requestStack;
private $options;
private function __construct(
UrlGeneratorInterface $urlGenerator,
Serializer $serializer,
RequestStack $requestStack,
array $formats = null,
int $failedValidationCode = Response::HTTP_BAD_REQUEST,
int $emptyContentCode = Response::HTTP_NO_CONTENT,
bool $serializeNull = false,
array $options = []
) {
$this->urlGenerator = $urlGenerator;
$this->serializer = $serializer;
$this->requestStack = $requestStack;
$this->formats = (array) $formats;
$this->failedValidationCode = $failedValidationCode;
$this->emptyContentCode = $emptyContentCode;
$this->serializeNull = $serializeNull;
$this->options = $options + [
'exclusionStrategyGroups' => [],
'exclusionStrategyVersion' => null,
'serializeNullStrategy' => null,
];
$this->reset();
}
public static function create(
UrlGeneratorInterface $urlGenerator,
Serializer $serializer,
RequestStack $requestStack,
array $formats = null,
int $failedValidationCode = Response::HTTP_BAD_REQUEST,
int $emptyContentCode = Response::HTTP_NO_CONTENT,
bool $serializeNull = false,
array $options = []
): self {
return new self($urlGenerator, $serializer, $requestStack, $formats, $failedValidationCode, $emptyContentCode, $serializeNull, $options);
}
/**
* @param string[]|string $groups
*/
public function setExclusionStrategyGroups($groups): void
{
$this->exclusionStrategyGroups = (array) $groups;
}
public function setExclusionStrategyVersion(string $version): void
{
$this->exclusionStrategyVersion = $version;
}
public function setSerializeNullStrategy(bool $isEnabled): void
{
$this->serializeNullStrategy = $isEnabled;
}
/**
* {@inheritdoc}
*/
public function supports(string $format): bool
{
return isset($this->customHandlers[$format]) || isset($this->formats[$format]);
}
/**
* Registers a custom handler.
*
* The handler must have the following signature: handler(ViewHandler $viewHandler, View $view, Request $request, $format)
* It can use the public methods of this class to retrieve the needed data and return a
* Response object ready to be sent.
*/
public function registerHandler(string $format, callable $callable): void
{
$this->customHandlers[$format] = $callable;
}
/**
* Handles a request with the proper handler.
*
* Decides on which handler to use based on the request format.
*
* @throws UnsupportedMediaTypeHttpException
*/
public function handle(View $view, Request $request = null): Response
{
if (null === $request) {
$request = $this->requestStack->getCurrentRequest();
}
$format = $view->getFormat() ?: $request->getRequestFormat();
if (!$this->supports($format)) {
$msg = "Format '$format' not supported, handler must be implemented";
throw new UnsupportedMediaTypeHttpException($msg);
}
if (isset($this->customHandlers[$format])) {
return call_user_func($this->customHandlers[$format], $this, $view, $request, $format);
}
return $this->createResponse($view, $request, $format);
}
public function createRedirectResponse(View $view, string $location, string $format): Response
{
$content = null;
if ((Response::HTTP_CREATED === $view->getStatusCode() || Response::HTTP_ACCEPTED === $view->getStatusCode()) && null !== $view->getData()) {
$response = $this->initResponse($view, $format);
} else {
$response = $view->getResponse();
}
$code = $this->getStatusCode($view, $content);
$response->setStatusCode($code);
$response->headers->set('Location', $location);
return $response;
}
public function createResponse(View $view, Request $request, string $format): Response
{
$route = $view->getRoute();
$location = $route
? $this->urlGenerator->generate($route, (array) $view->getRouteParameters(), UrlGeneratorInterface::ABSOLUTE_URL)
: $view->getLocation();
if ($location) {
return $this->createRedirectResponse($view, $location, $format);
}
$response = $this->initResponse($view, $format);
if (!$response->headers->has('Content-Type')) {
$mimeType = $request->attributes->get('media_type');
if (null === $mimeType) {
$mimeType = $request->getMimeType($format);
}
$response->headers->set('Content-Type', $mimeType);
}
return $response;
}
/**
* Gets a response HTTP status code from a View instance.
*
* By default it will return 200. However if there is a FormInterface stored for
* the key 'form' in the View's data it will return the failed_validation
* configuration if the form instance has errors.
*
* @param string|false|null
*/
private function getStatusCode(View $view, $content = null): int
{
$form = $this->getFormFromView($view);
if (null !== $form && $form->isSubmitted() && !$form->isValid()) {
return $this->failedValidationCode;
}
$statusCode = $view->getStatusCode();
if (null !== $statusCode) {
return $statusCode;
}
return null !== $content ? Response::HTTP_OK : $this->emptyContentCode;
}
private function getSerializationContext(View $view): Context
{
$context = $view->getContext();
$groups = $context->getGroups();
if (empty($groups) && $this->exclusionStrategyGroups) {
$context->setGroups($this->exclusionStrategyGroups);
}
if (null === $context->getVersion() && $this->exclusionStrategyVersion) {
$context->setVersion($this->exclusionStrategyVersion);
}
if (null === $context->getSerializeNull() && null !== $this->serializeNullStrategy) {
$context->setSerializeNull($this->serializeNullStrategy);
}
if (null !== $view->getStatusCode() && !$context->hasAttribute('status_code')) {
$context->setAttribute('status_code', $view->getStatusCode());
}
return $context;
}
private function initResponse(View $view, string $format): Response
{
$content = null;
if ($this->serializeNull || null !== $view->getData()) {
$data = $this->getDataFromView($view);
if ($data instanceof FormInterface && $data->isSubmitted() && !$data->isValid()) {
$view->getContext()->setAttribute('status_code', $this->failedValidationCode);
}
$context = $this->getSerializationContext($view);
$content = $this->serializer->serialize($data, $format, $context);
}
$response = $view->getResponse();
$response->setStatusCode($this->getStatusCode($view, $content));
if (null !== $content) {
$response->setContent($content);
}
return $response;
}
private function getFormFromView(View $view): ?FormInterface
{
$data = $view->getData();
if ($data instanceof FormInterface) {
return $data;
}
if (is_array($data) && isset($data['form']) && $data['form'] instanceof FormInterface) {
return $data['form'];
}
return null;
}
private function getDataFromView(View $view)
{
$form = $this->getFormFromView($view);
if (null === $form) {
return $view->getData();
}
return $form;
}
public function reset(): void
{
$this->exclusionStrategyGroups = $this->options['exclusionStrategyGroups'];
$this->exclusionStrategyVersion = $this->options['exclusionStrategyVersion'];
$this->serializeNullStrategy = $this->options['serializeNullStrategy'];
}
}

vendor/friendsofsymfony/rest-bundle/View/ViewHandler.php line 190