From 1f336034600e2fd8eb5648f5e60a52d66bda4cb9 Mon Sep 17 00:00:00 2001
From: Piotr Kurpiewski <kurpievski@gmail.com>
Date: Tue, 9 Apr 2019 12:50:26 +0200
Subject: [PATCH] dont increase the frequancy field if its null

---
 src/Taggable.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Taggable.php b/src/Taggable.php
index 96dc470..a40f1e6 100644
--- a/src/Taggable.php
+++ b/src/Taggable.php
@@ -163,7 +163,9 @@ public function afterSave($event)
                 $tag->{$this->name} = $name;
             }
 
-            $tag->{$this->frequency}++;
+            if (!is_null($tag->{$this->frequency})) {
+                $tag->{$this->frequency}++;
+            }
 
             if ($tag->save()) {
                 $updatedTags[] = $tag;
@@ -205,7 +207,7 @@ public function beforeDelete($event)
             ->createCommand()
             ->delete($pivot, [key($relation->via->link) => $this->owner->getPrimaryKey()])
             ->execute();
-        
+
         if ($this->removeUnusedTags)
         {
             $class::deleteAll([$this->frequency => 0]);