Show only applied groups in Icinga Host Form

application/forms/IcingaHostForm.php

@@ -236,6 +236,12 @@ class IcingaHostForm extends DirectorObjectForm
         ));
 
         $applied = $this->getAppliedGroups();
+        if ($this->hasHostGroupRestriction()) {
+            $applied = (new HostgroupRestriction($this->getDb(), $this->getAuth()))
+                ->filterRestrictedHostgroups($applied);
+        }
+
+
         if (! empty($applied)) {
             $this->addElement('simpleNote', 'applied_groups', [
                 'label'  => $this->translate('Applied groups'),

library/Director/Restriction/HostgroupRestriction.php

@@ -121,6 +121,11 @@ class HostgroupRestriction extends ObjectRestriction
         );
     }
 
+    public function filterRestrictedHostgroups(array $groups)
+    {
+        return array_intersect($groups, $this->listRestrictedHostgroups());
+    }
+
     /**
      * Apply the restriction to the given Hosts Query
      *