1 files changed, 55 insertions, 0 deletions
diff --git a/library/Director/Web/Form/Validate/IsDataListEntry.php b/library/Director/Web/Form/Validate/IsDataListEntry.php
new file mode 100644
index 0000000..5762d2e
--- /dev/null
+++ b/library/Director/Web/Form/Validate/IsDataListEntry.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace Icinga\Module\Director\Web\Form\Validate;
+
+use Icinga\Module\Director\Db;
+use Icinga\Module\Director\Objects\DirectorDatalistEntry;
+use Zend_Validate_Abstract;
+
+class IsDataListEntry extends Zend_Validate_Abstract
+{
+    const INVALID = 'intInvalid';
+
+    /** @var Db */
+    private $db;
+
+    /** @var int */
+    private $dataListId;
+
+    public function __construct($dataListId, Db $db)
+    {
+        $this->db = $db;
+        $this->dataListId = (int) $dataListId;
+    }
+
+    public function isValid($value)
+    {
+        if (is_array($value)) {
+            foreach ($value as $name) {
+                if (! $this->isListEntry($name)) {
+                    $this->_error(self::INVALID, $value);
+
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        if ($this->isListEntry($value)) {
+            return true;
+        } else {
+            $this->_error(self::INVALID, $value);
+
+            return false;
+        }
+    }
+
+    protected function isListEntry($name)
+    {
+        return DirectorDatalistEntry::exists([
+            'list_id' => $this->dataListId,
+            'entry_name' => $name,
+        ], $this->db);
+    }
+}