1 files changed, 12 insertions, 15 deletions

diff --git a/application/forms/Command/Object/ScheduleCheckForm.php b/application/forms/Command/Object/ScheduleCheckForm.php
index 9b32ea1..bdeba53 100644
--- a/application/forms/Command/Object/ScheduleCheckForm.php
+++ b/application/forms/Command/Object/ScheduleCheckForm.php
@@ -4,9 +4,9 @@
 
 namespace Icinga\Module\Icingadb\Forms\Command\Object;
 
+use CallbackFilterIterator;
 use DateInterval;
 use DateTime;
-use Generator;
 use Icinga\Module\Icingadb\Command\Object\ScheduleCheckCommand;
 use Icinga\Module\Icingadb\Forms\Command\CommandForm;
 use Icinga\Module\Icingadb\Model\Host;
@@ -14,8 +14,10 @@ use Icinga\Web\Notification;
 use ipl\Html\Attributes;
 use ipl\Html\HtmlElement;
 use ipl\Html\Text;
+use ipl\Orm\Model;
 use ipl\Web\FormDecorator\IcingaFormDecorator;
 use ipl\Web\Widget\Icon;
+use Iterator;
 use Traversable;
 
 use function ipl\Stdlib\iterable_value_first;
@@ -109,22 +111,17 @@ class ScheduleCheckForm extends CommandForm
         (new IcingaFormDecorator())->decorate($this->getElement('btn_submit'));
     }
 
-    protected function getCommands(Traversable $objects): Traversable
+    protected function getCommands(Iterator $objects): Traversable
     {
-        $granted = (function () use ($objects): Generator {
-            foreach ($objects as $object) {
-                if (
-                    $this->isGrantedOn('icingadb/command/schedule-check', $object)
-                    || (
-                        $object->active_checks_enabled
-                        && $this->isGrantedOn('icingadb/command/schedule-check/active-only', $object)
-                    )
-                ) {
-                    yield $object;
-                }
-            }
-        })();
+        $granted = new CallbackFilterIterator($objects, function (Model $object): bool {
+            return $this->isGrantedOn('icingadb/command/schedule-check', $object)
+                || (
+                    $object->active_checks_enabled
+                    && $this->isGrantedOn('icingadb/command/schedule-check/active-only', $object)
+                );
+        });
 
+        $granted->rewind(); // Forwards the pointer to the first element
         if ($granted->valid()) {
             $command = new ScheduleCheckCommand();
             $command->setObjects($granted);