Adding time ago to template output of heartbeat

src/Plugin/Block/HeartbeatBlock.php

@@ -5,6 +5,7 @@ namespace Drupal\heartbeat\Plugin\Block;
 use Drupal\Core\Block\BlockBase;
 use Drupal\Core\Entity\EntityTypeManager;
 use Drupal\User\Entity\User;
+use Drupal\Core\Datetime\DateFormatter;
 use Drupal\File\Entity\File;
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
@@ -45,6 +46,8 @@ class HeartbeatBlock extends BlockBase implements ContainerFactoryPluginInterfac
   protected $heartbeatService;
 
   protected $entityTypeManager;
+
+  protected $dateFormatter;
   /**
    * Construct.
    *
@@ -61,13 +64,14 @@ class HeartbeatBlock extends BlockBase implements ContainerFactoryPluginInterfac
         $plugin_definition,
         HeartbeatTypeServices $heartbeat_heartbeattype,
 	HeartbeatStreamServices $heartbeatstream,
-	HeartbeatService $heartbeat, EntityTypeManager $entity_type_manager
+	HeartbeatService $heartbeat, EntityTypeManager $entity_type_manager, DateFormatter $date_formatter
   ) {
     parent::__construct($configuration, $plugin_id, $plugin_definition);
     $this->heartbeatTypeServices = $heartbeat_heartbeattype;
     $this->heartbeatStreamServices = $heartbeatstream;
     $this->heartbeatService = $heartbeat;
     $this->entityTypeManager = $entity_type_manager;
+    $this->dateFormatter = $date_formatter;
   }
   /**
    * {@inheritdoc}
@@ -80,7 +84,8 @@ class HeartbeatBlock extends BlockBase implements ContainerFactoryPluginInterfac
       $container->get('heartbeat.heartbeattype'),
       $container->get('heartbeatstream'),
       $container->get('heartbeat'),
-      $container->get('entity_type.manager')
+      $container->get('entity_type.manager'),
+      $container->get('date.formatter')
     );
   }
 
@@ -145,6 +150,8 @@ class HeartbeatBlock extends BlockBase implements ContainerFactoryPluginInterfac
     }
 
     private function renderMessage(array &$messages, $heartbeat) {
+
+      $timeago = $this->dateFormatter->formatInterval(REQUEST_TIME - $heartbeat->getCreatedTime());
       $user = $heartbeat->getOwner();
       $profilePic = $user->get('user_picture');
       $style = $this->entityTypeManager->getStorage('image_style')->load('thumbnail');
@@ -152,6 +159,8 @@ class HeartbeatBlock extends BlockBase implements ContainerFactoryPluginInterfac
       $rendered = $style->buildUrl($pic);
       $messages[] = array('heartbeat' => $heartbeat->getMessage()->getValue()[0]['value'],
         'userPicture' => $rendered,
-        'userId' => $user->id());
+        'userId' => $user->id(),
+        'timeAgo' => $timeago,
+        );
     }
 }

templates/heartbeat-stream.html.twig

@@ -22,7 +22,7 @@
   {% autoescape false %}
   {% for message in messages %}
     <div{{ attributes.addClass('heartbeat-message') }}>
-      <div class="heartbeat-owner"><a href="/user/{{ message.userId }}"><img src="{{ message.userPicture }}" /></a></div>
+      <div class="heartbeat-owner"><a href="/user/{{ message.userId }}"><img src="{{ message.userPicture }}" /></a><div class="time-ago">{{ message.timeAgo }}</div></div>
       {{ message.heartbeat }}<br>
     </div>
   {% endfor %}