Viewing file:  InlineFragmentRenderer.php (5.28 KB) -rw-r--r--
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<?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\HttpKernel\Fragment;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpKernel\Controller\ControllerReference;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
/**
* Implements the inline rendering strategy where the Request is rendered by the current HTTP kernel.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class InlineFragmentRenderer extends RoutableFragmentRenderer
{
private $kernel;
private $dispatcher;
/**
* Constructor.
*
* @param HttpKernelInterface $kernel A HttpKernelInterface instance
* @param EventDispatcherInterface $dispatcher A EventDispatcherInterface instance
*/
public function __construct(HttpKernelInterface $kernel, EventDispatcherInterface $dispatcher = null)
{
$this->kernel = $kernel;
$this->dispatcher = $dispatcher;
}
/**
* {@inheritdoc}
*
* Additional available options:
*
* * alt: an alternative URI to render in case of an error
*/
public function render($uri, Request $request, array $options = array())
{
$reference = null;
if ($uri instanceof ControllerReference) {
$reference = $uri;
// Remove attributes from the generated URI because if not, the Symfony
// routing system will use them to populate the Request attributes. We don't
// want that as we want to preserve objects (so we manually set Request attributes
// below instead)
$attributes = $reference->attributes;
$reference->attributes = array();
// The request format and locale might have been overridden by the user
foreach (array('_format', '_locale') as $key) {
if (isset($attributes[$key])) {
$reference->attributes[$key] = $attributes[$key];
}
}
$uri = $this->generateFragmentUri($uri, $request, false, false);
$reference->attributes = array_merge($attributes, $reference->attributes);
}
$subRequest = $this->createSubRequest($uri, $request);
// override Request attributes as they can be objects (which are not supported by the generated URI)
if (null !== $reference) {
$subRequest->attributes->add($reference->attributes);
}
$level = ob_get_level();
try {
return $this->kernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST, false);
} catch (\Exception $e) {
// we dispatch the exception event to trigger the logging
// the response that comes back is simply ignored
if (isset($options['ignore_errors']) && $options['ignore_errors'] && $this->dispatcher) {
$event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e);
$this->dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
}
// let's clean up the output buffers that were created by the sub-request
while (ob_get_level() > $level) {
ob_get_clean();
}
if (isset($options['alt'])) {
$alt = $options['alt'];
unset($options['alt']);
return $this->render($alt, $request, $options);
}
if (!isset($options['ignore_errors']) || !$options['ignore_errors']) {
throw $e;
}
return new Response();
}
}
protected function createSubRequest($uri, Request $request)
{
$cookies = $request->cookies->all();
$server = $request->server->all();
// Override the arguments to emulate a sub-request.
// Sub-request object will point to localhost as client ip and real client ip
// will be included into trusted header for client ip
try {
if ($trustedHeaderName = Request::getTrustedHeaderName(Request::HEADER_CLIENT_IP)) {
$currentXForwardedFor = $request->headers->get($trustedHeaderName, '');
$server['HTTP_'.$trustedHeaderName] = ($currentXForwardedFor ? $currentXForwardedFor.', ' : '').$request->getClientIp();
}
} catch (\InvalidArgumentException $e) {
// Do nothing
}
$server['REMOTE_ADDR'] = '127.0.0.1';
$subRequest = Request::create($uri, 'get', array(), $cookies, array(), $server);
if ($request->headers->has('Surrogate-Capability')) {
$subRequest->headers->set('Surrogate-Capability', $request->headers->get('Surrogate-Capability'));
}
if ($session = $request->getSession()) {
$subRequest->setSession($session);
}
return $subRequest;
}
/**
* {@inheritdoc}
*/
public function getName()
{
return 'inline';
}
}
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