From f98feb398cde33d577acac0d8fc74c0d5d25207b Mon Sep 17 00:00:00 2001
From: Bart Hijmans <bart.hijmans@dongit.nl>
Date: Fri, 18 Sep 2020 09:34:32 +0200
Subject: [PATCH] Made a protected variable for $parentRelation

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

diff --git a/src/NestableCollection.php b/src/NestableCollection.php
index 1a7ec3d..38cba8b 100644
--- a/src/NestableCollection.php
+++ b/src/NestableCollection.php
@@ -26,6 +26,8 @@ class NestableCollection extends Collection
 
     protected $childrenName = 'items';
 
+    protected $parentRelation = 'parent';
+
     public function __construct($items = [])
     {
         parent::__construct($items);
@@ -219,9 +221,9 @@ protected function setParentsRecursive(&$items, &$parent = null)
     {
         foreach ($items as $item) {
             if ($parent) {
-                $item->setRelation('parent', $parent);
+                $item->setRelation($this->parentRelation, $parent);
             }
-            $this->setParentsRecursive($item->items, $item);
+            $this->setParentsRecursive($item->{$this->childrenName}, $item);
         }
     }
 }