improve activity

src/Bundle/ChillActivityBundle/Controller/ActivityController.php

@@ -72,6 +72,7 @@ class ActivityController extends AbstractController
     {
         $em = $this->getDoctrine()->getManager();
         $view = null;
+        // TODO: add pagination
 
         [$person, $accompanyingPeriod] = $this->getEntity($request);
 
@@ -80,10 +81,9 @@ class ActivityController extends AbstractController
                 ->getReachableCircles($this->getUser(), new Role('CHILL_ACTIVITY_SEE'),
                     $person->getCenter());
 
-            $activities = $em->getRepository('ChillActivityBundle:Activity')->findBy(
-                ['person' => $person, 'scope' => $reachableScopes],
-                ['date' => 'DESC'],
-            );
+            $activities = $em->getRepository(Activity::class)
+                ->findByPersonImplied($person, $reachableScopes)
+                ;
 
             $event = new PrivacyEvent($person, array(
                 'element_class' => Activity::class,