Core/Groups/Events.php

@@ -81,6 +81,20 @@ class Events
  $e->setResponse(($group->isOwner($user->guid) || $group->isModerator($user->guid)) && $group->isMember($user->guid));
  });
 
+ Dispatcher::register('acl:interact', 'activity', function ($e) {
+ $params = $e->getParameters();
+ $activity = $params['entity'];
+ $user = $params['user'];
+
+ if ($activity instanceof Activity && $activity->container_guid && $activity->container_guid !== $activity->owner_guid) {
+ $container = EntitiesFactory::build($activity->container_guid);
+
+ if ($container->type === 'group') {
+ $e->setResponse($container->isMember($user->guid));
+ }
+ }
+ });
+
  Dispatcher::register('acl:interact', 'group', function ($e) {
  $params = $e->getParameters();
  $group = $params['entity'];