From dc8ec9ee1d337198feddce0f000df1da073f8294 Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Thu, 22 Jul 2021 12:28:02 +0930
Subject: [PATCH] Ensure Laravel feature is supported before using

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

diff --git a/src/Adapter/EloquentAdapter.php b/src/Adapter/EloquentAdapter.php
index 5958c37..995eedf 100644
--- a/src/Adapter/EloquentAdapter.php
+++ b/src/Adapter/EloquentAdapter.php
@@ -215,10 +215,10 @@ class EloquentAdapter implements AdapterInterface
                 $query = $relation->getQuery();
 
                 if (is_array($scope)) {
-                    // Requires Laravel 8.15+
                     foreach ($scope as $v) {
+                        // Requires Laravel 8.15+
                         $adapter = $v['resource']->getAdapter();
-                        if ($adapter instanceof self) {
+                        if ($adapter instanceof self && method_exists($relation, 'constrain')) {
                             $relation->constrain([
                                 get_class($adapter->newModel()) => $v['scope']
                             ]);