fix create slug

kernel/helpers/Slug.php

@@ -2,6 +2,9 @@
 
 namespace kernel\helpers;
 
+use kernel\FormModel;
+use kernel\modules\post\models\Post;
+
 class Slug
 {
 
@@ -123,6 +126,15 @@ class Slug
         return $options['lowercase'] ? mb_strtolower($str, 'UTF-8') : $str;
     }
 
+    public static function recursiveCreateSlug($model, $slug, $tmpSlug = '', $id = 1): string
+    {
+        if ($tmpSlug === '') $tmpSlug = $slug;
+        if ($model::where(['slug' => $tmpSlug])->exists()) {
+            $tmpSlug = $slug . '-' . $id++;
+            $tmpSlug = Slug::recursiveCreateSlug($model, $slug, $id);
+        }
+        return $tmpSlug;
+    }
 
 
 }
@@ -162,4 +174,5 @@ chto-delat-esli-ya-ne-hochu-utf-8
 מה-אם-×× ×™-לא-רוצה-utf-8-תווים
 This is an Example String. What's Going to Happen to Me?
 This_is_a_Test_String_What_s_Going_to_Ha
-*/
+*/
+