src/Package/Toolkit/TwigServiceLoaderSubscriber/TwigServiceLoaderSubscriber.php line 91

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  1. <?php
  2. namespace App\Package\Toolkit\TwigServiceLoaderSubscriber;
  4. use Symfony\Component\EventDispatcher\EventSubscriberInterface,
  5.     Symfony\Component\HttpKernel\KernelEvents,
  6.     Symfony\Component\HttpKernel\Event\ControllerEvent,
  7.     Symfony\Component\DependencyInjection\ContainerInterface,
  8.     Twig\Environment;
  10. use App\Package\Toolkit\ApplicationMode\ApplicationMode,
  11.     App\Package\Toolkit\Exception\Exception\Exception;
  13. /**
  14.  * TwigServiceLoaderSubscriber
  15.  *
  16.  * Executed on KernelEvents::CONTROLLER
  17.  * - adds services to twig globals depending on application mode and
  18.  *   passed twig services configuration
  19.  *
  20.  * Twig is taken from container (class \Twig_Environment)
  21.  * IMPORTANT: It's not templating, it's raw twig environment
  22.  *
  23.  * @see        include.yml
  24.  *
  25.  * @author     Daniel Balowski <d.balowski@openform.pl> (_creator)
  26.  * @copyright  Openform
  27.  * @since      03.2019
  28.  */
  29. class TwigServiceLoaderSubscriber implements EventSubscriberInterface
  30. {
  31.     /**
  32.      * @var ContainerInterface
  33.      */
  34.     protected $container;
  36.     /**
  37.      * @var ApplicationMode
  38.      */
  39.     protected $applicationMode;
  41.     /**
  42.      * @var string[]
  43.      */
  44.     protected $twigServices;
  46.     /**
  47.      * @var Environment $twig
  48.      */
  49.     protected $twig;
  52.     /**
  53.      * @param ContainerInterface  $container
  54.      * @param ApplicationMode     $applicationMode
  55.      * @param string[]            $twigServices
  56.      */
  57.     public function __construct(
  58.         ContainerInterface $container,
  59.         ApplicationMode    $applicationMode,
  60.         Environment        $twig,
  61.         array              $twigServices
  62.     ) {
  63.         $this->container       = $container;
  64.         $this->applicationMode = $applicationMode;
  65.         $this->twigServices    = $twigServices;
  66.         $this->twig            = $twig;
  67.     }
  70.     /**
  71.      * {@inheritDoc}
  72.      */
  73.     public static function getSubscribedEvents() : array
  74.     {
  75.         return [
  76.             KernelEvents::CONTROLLER => [
  77.                 [ 'addServicesToTwigGlobals', 255 ],
  78.             ]
  79.         ];
  80.     }
  82.     /**
  83.      * Adds services to twig globals
  84.      *
  85.      * @param ControllerEvent $event
  86.      *
  87.      * @throws Exception    if service does not exist in container
  88.      *
  89.      * @return void
  90.      */
  91.     public function addServicesToTwigGlobals(ControllerEvent $event) : void
  92.     {
  93.         if (! array_key_exists($this->applicationMode->getCurrentMode(), $this->twigServices)) {
  94.             return;
  95.         }
  97.         $servicesToLoad = [];
  99.         foreach($this->twigServices[ $this->applicationMode->getCurrentMode() ] as $services) {
  100.             if ($services) {
  101.                 foreach ($services as $serviceName => $service) {
  102.                     $servicesToLoad[ $serviceName ] =  $service;
  103.                 }
  104.             }
  105.         }
  107.         foreach($servicesToLoad as $globalName => $service) {
  108.             if (! $this->container->has($service)) {
  109.                 throw new Exception(
  110.                     ' >> Missing service in container: "' . $service . '"'
  111.                 );
  112.             }
  114.             $this->twig->addGlobal($globalName, $this->container->get($service));
  115.         }
  117.         return;
  118.     }
  119. }