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/vendor/symfony/http-kernel/Fragment/ -> InlineFragmentRenderer.php (source)

   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\HttpKernel\Fragment;
  13  
  14  use Symfony\Component\EventDispatcher\EventDispatcherInterface;
  15  use Symfony\Component\HttpFoundation\Request;
  16  use Symfony\Component\HttpFoundation\Response;
  17  use Symfony\Component\HttpKernel\Controller\ControllerReference;
  18  use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
  19  use Symfony\Component\HttpKernel\HttpCache\SubRequestHandler;
  20  use Symfony\Component\HttpKernel\HttpKernelInterface;
  21  use Symfony\Component\HttpKernel\KernelEvents;
  22  
  23  /**
  24   * Implements the inline rendering strategy where the Request is rendered by the current HTTP kernel.
  25   *
  26   * @author Fabien Potencier <fabien@symfony.com>
  27   */
  28  class InlineFragmentRenderer extends RoutableFragmentRenderer
  29  {
  30      private $kernel;
  31      private $dispatcher;
  32  
  33      public function __construct(HttpKernelInterface $kernel, EventDispatcherInterface $dispatcher = null)
  34      {
  35          $this->kernel = $kernel;
  36          $this->dispatcher = $dispatcher;
  37      }
  38  
  39      /**
  40       * {@inheritdoc}
  41       *
  42       * Additional available options:
  43       *
  44       *  * alt: an alternative URI to render in case of an error
  45       */
  46      public function render($uri, Request $request, array $options = [])
  47      {
  48          $reference = null;
  49          if ($uri instanceof ControllerReference) {
  50              $reference = $uri;
  51  
  52              // Remove attributes from the generated URI because if not, the Symfony
  53              // routing system will use them to populate the Request attributes. We don't
  54              // want that as we want to preserve objects (so we manually set Request attributes
  55              // below instead)
  56              $attributes = $reference->attributes;
  57              $reference->attributes = [];
  58  
  59              // The request format and locale might have been overridden by the user
  60              foreach (['_format', '_locale'] as $key) {
  61                  if (isset($attributes[$key])) {
  62                      $reference->attributes[$key] = $attributes[$key];
  63                  }
  64              }
  65  
  66              $uri = $this->generateFragmentUri($uri, $request, false, false);
  67  
  68              $reference->attributes = array_merge($attributes, $reference->attributes);
  69          }
  70  
  71          $subRequest = $this->createSubRequest($uri, $request);
  72  
  73          // override Request attributes as they can be objects (which are not supported by the generated URI)
  74          if (null !== $reference) {
  75              $subRequest->attributes->add($reference->attributes);
  76          }
  77  
  78          $level = ob_get_level();
  79          try {
  80              return SubRequestHandler::handle($this->kernel, $subRequest, HttpKernelInterface::SUB_REQUEST, false);
  81          } catch (\Exception $e) {
  82              // we dispatch the exception event to trigger the logging
  83              // the response that comes back is ignored
  84              if (isset($options['ignore_errors']) && $options['ignore_errors'] && $this->dispatcher) {
  85                  $event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e);
  86  
  87                  $this->dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
  88              }
  89  
  90              // let's clean up the output buffers that were created by the sub-request
  91              Response::closeOutputBuffers($level, false);
  92  
  93              if (isset($options['alt'])) {
  94                  $alt = $options['alt'];
  95                  unset($options['alt']);
  96  
  97                  return $this->render($alt, $request, $options);
  98              }
  99  
 100              if (!isset($options['ignore_errors']) || !$options['ignore_errors']) {
 101                  throw $e;
 102              }
 103  
 104              return new Response();
 105          }
 106      }
 107  
 108      protected function createSubRequest($uri, Request $request)
 109      {
 110          $cookies = $request->cookies->all();
 111          $server = $request->server->all();
 112  
 113          unset($server['HTTP_IF_MODIFIED_SINCE']);
 114          unset($server['HTTP_IF_NONE_MATCH']);
 115  
 116          $subRequest = Request::create($uri, 'get', [], $cookies, [], $server);
 117          if ($request->headers->has('Surrogate-Capability')) {
 118              $subRequest->headers->set('Surrogate-Capability', $request->headers->get('Surrogate-Capability'));
 119          }
 120  
 121          if ($session = $request->getSession()) {
 122              $subRequest->setSession($session);
 123          }
 124  
 125          if ($request->get('_format')) {
 126              $subRequest->attributes->set('_format', $request->get('_format'));
 127          }
 128          if ($request->getDefaultLocale() !== $request->getLocale()) {
 129              $subRequest->setLocale($request->getLocale());
 130          }
 131  
 132          return $subRequest;
 133      }
 134  
 135      /**
 136       * {@inheritdoc}
 137       */
 138      public function getName()
 139      {
 140          return 'inline';
 141      }
 142  }


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