diff --git a/app/Model/AppModel.php b/app/Model/AppModel.php
index e82e0723af5..5364633a49b 100644
--- a/app/Model/AppModel.php
+++ b/app/Model/AppModel.php
@@ -4021,4 +4021,9 @@ private function validOrderClause($order){
 
         return false;
     }
+
+    public function checkParam($param)
+    {
+        return preg_match('/^[\w\_\-\. ]+$/', $param);
+    }
 }