From 1af0c02bfd9cf95ea79312fa567eea3321c0f656 Mon Sep 17 00:00:00 2001
From: Federico Marquesto <fede.marquesto@gmail.com>
Date: Wed, 15 May 2024 15:52:00 -0300
Subject: [PATCH] handle when the relation is null. e.g: when we set null to a
 relation key

---
 src/Behaviours/CountCache/CountCache.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Behaviours/CountCache/CountCache.php b/src/Behaviours/CountCache/CountCache.php
index 672fd56..f71dfef 100644
--- a/src/Behaviours/CountCache/CountCache.php
+++ b/src/Behaviours/CountCache/CountCache.php
@@ -44,7 +44,11 @@ public function update(): void
             $originalRelatedModel = $config->emptyRelatedModel($this->model)->find($this->model->getOriginal($foreignKey));
 
             $this->updateCacheValue($originalRelatedModel, $config, -1);
-            $this->updateCacheValue($config->relatedModel($this->model), $config, 1);
+
+            // if the relation is null, then we don't need to do anything else.
+            if($this->model->{$foreignKey}) {
+                $this->updateCacheValue($config->relatedModel($this->model), $config, 1);
+            }
         });
     }