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/vendor/symfony/http-kernel/Fragment/ -> RoutableFragmentRenderer.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\HttpFoundation\Request;
  15  use Symfony\Component\HttpKernel\Controller\ControllerReference;
  16  use Symfony\Component\HttpKernel\EventListener\FragmentListener;
  17  
  18  /**
  19   * Adds the possibility to generate a fragment URI for a given Controller.
  20   *
  21   * @author Fabien Potencier <fabien@symfony.com>
  22   */
  23  abstract class RoutableFragmentRenderer implements FragmentRendererInterface
  24  {
  25      private $fragmentPath = '/_fragment';
  26  
  27      /**
  28       * Sets the fragment path that triggers the fragment listener.
  29       *
  30       * @param string $path The path
  31       *
  32       * @see FragmentListener
  33       */
  34      public function setFragmentPath($path)
  35      {
  36          $this->fragmentPath = $path;
  37      }
  38  
  39      /**
  40       * Generates a fragment URI for a given controller.
  41       *
  42       * @param ControllerReference $reference A ControllerReference instance
  43       * @param Request             $request   A Request instance
  44       * @param bool                $absolute  Whether to generate an absolute URL or not
  45       * @param bool                $strict    Whether to allow non-scalar attributes or not
  46       *
  47       * @return string A fragment URI
  48       */
  49      protected function generateFragmentUri(ControllerReference $reference, Request $request, $absolute = false, $strict = true)
  50      {
  51          if ($strict) {
  52              $this->checkNonScalar($reference->attributes);
  53          }
  54  
  55          // We need to forward the current _format and _locale values as we don't have
  56          // a proper routing pattern to do the job for us.
  57          // This makes things inconsistent if you switch from rendering a controller
  58          // to rendering a route if the route pattern does not contain the special
  59          // _format and _locale placeholders.
  60          if (!isset($reference->attributes['_format'])) {
  61              $reference->attributes['_format'] = $request->getRequestFormat();
  62          }
  63          if (!isset($reference->attributes['_locale'])) {
  64              $reference->attributes['_locale'] = $request->getLocale();
  65          }
  66  
  67          $reference->attributes['_controller'] = $reference->controller;
  68  
  69          $reference->query['_path'] = http_build_query($reference->attributes, '', '&');
  70  
  71          $path = $this->fragmentPath.'?'.http_build_query($reference->query, '', '&');
  72  
  73          if ($absolute) {
  74              return $request->getUriForPath($path);
  75          }
  76  
  77          return $request->getBaseUrl().$path;
  78      }
  79  
  80      private function checkNonScalar($values)
  81      {
  82          foreach ($values as $key => $value) {
  83              if (\is_array($value)) {
  84                  $this->checkNonScalar($value);
  85              } elseif (!is_scalar($value) && null !== $value) {
  86                  throw new \LogicException(sprintf('Controller attributes cannot contain non-scalar/non-null values (value for key "%s" is not a scalar or null).', $key));
  87              }
  88          }
  89      }
  90  }


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