Add presenter Twig extension

Author: DieterHolvoet

src/Twig/Extension/PresenterExtension.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Drupal\wmcontroller\Twig\Extension;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\wmcontroller\Entity\HasPresenterInterface;
+use Drupal\wmcontroller\Service\Cache\Dispatcher;
+use Drupal\wmcontroller\Service\PresenterFactoryInterface;
+use Twig_SimpleFilter;
+
+class PresenterExtension extends \Twig_Extension
+{
+    /** @var PresenterFactoryInterface */
+    protected $presenterFactory;
+    /** @var Dispatcher */
+    protected $dispatcher;
+
+    public function __construct(
+        PresenterFactoryInterface $presenterFactory,
+        Dispatcher $dispatcher
+    ) {
+        $this->presenterFactory = $presenterFactory;
+        $this->dispatcher = $dispatcher;
+    }
+
+    public function getFilters()
+    {
+        return [
+            new Twig_SimpleFilter('presenter', [$this, 'getPresenter']),
+            new Twig_SimpleFilter('p', [$this, 'getPresenter']),
+        ];
+    }
+
+    public function getPresenter($entities)
+    {
+        if (!is_array($entities)) {
+            return $this->fetchPresenter($entities);
+        }
+
+        $presenters = [];
+        foreach ($entities as $key => $entity) {
+            $presenters[$key] = $this->fetchPresenter($entity);
+        }
+
+        return $presenters;
+    }
+
+    protected function fetchPresenter($entity)
+    {
+        if ($entity instanceof EntityInterface) {
+            $this->dispatcher->dispatchPresented($entity);
+        }
+
+        if ($entity instanceof HasPresenterInterface) {
+            return $this->presenterFactory->getPresenterForEntity($entity);
+        }
+
+        return $entity;
+    }
+}

wmcontroller.services.yml

@@ -341,3 +341,10 @@ services:
         arguments:
             - '@class_resolver'
             - '%wmcontroller.settings%'
+
+    wmcontroller.twig_extension.presenter:
+        class: Drupal\wmcontroller\Twig\Extension\PresenterExtension
+        arguments:
+            - '@wmcontroller.presenter.factory'
+            - '@wmcontroller.cache.dispatcher'
+        tags: [{ name: twig.extension }]