From 981862a29fa04827f27bb051cd862f80408fa131 Mon Sep 17 00:00:00 2001
From: "John L. Villalovos" <jvillalovos@amperecomputing.com>
Date: Tue, 9 Jul 2024 10:35:59 -0700
Subject: [PATCH] fix: passing null to `explode()` function

When calling the `GetCategoryAttributes` API, got an error:

The application could not run because of the following error:
    Details
    Code: 8192
    Message: explode(): Passing null to parameter #2 ($string) of type string is deprecated
    File: /var/www/html/Domain/CustomAttribute.php
    Line: 137
---
 Domain/CustomAttribute.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Domain/CustomAttribute.php b/Domain/CustomAttribute.php
index ea67a8543..62d1bd97a 100644
--- a/Domain/CustomAttribute.php
+++ b/Domain/CustomAttribute.php
@@ -76,7 +76,7 @@ class CustomAttribute
     protected $adminOnly = false;
 
     /**
-     * @var string
+     * @var string|null
      */
     protected $possibleValues;
 
@@ -134,6 +134,9 @@ public function PossibleValues()
      */
     public function PossibleValueList()
     {
+        if (is_null($this->possibleValues)) {
+            return [];
+        }
         return explode(',', $this->possibleValues);
     }