From 5bed18614b25dec31f5f65bf745dfd212fe251a5 Mon Sep 17 00:00:00 2001
From: Sami Mokaddem <sami.mokaddem@circl.lu>
Date: Thu, 4 Aug 2022 14:51:37 +0200
Subject: [PATCH] fix: [correlation:getRelatedAttribute] Always return an array

---
 app/Model/Correlation.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/app/Model/Correlation.php b/app/Model/Correlation.php
index c70175e07..bb1025f20 100644
--- a/app/Model/Correlation.php
+++ b/app/Model/Correlation.php
@@ -830,12 +830,12 @@ class Correlation extends AppModel
      * @param array $attribute Attribute Array
      * @param array $fields List of fields to include
      * @param bool $includeEventData Flag to include the event data in the response
-     * @return array|null
+     * @return array
      */
-    public function getRelatedAttributes($user, $sgids, $attribute, $fields=[], $includeEventData = false)
+    public function getRelatedAttributes($user, $sgids, $attribute, $fields=[], $includeEventData = false): array
     {
         if (in_array($attribute['type'], Attribute::NON_CORRELATING_TYPES)) {
-            return null;
+            return [];
         }
         return $this->runGetRelatedAttributes($user, $sgids, $attribute, $fields, $includeEventData);
     }