From b7b67ebcb3e8b7c88aebc461281598268312b670 Mon Sep 17 00:00:00 2001
From: leandrogehlen <leandrogehlen@gmail.com>
Date: Thu, 30 Aug 2018 14:20:46 -0300
Subject: [PATCH] Fixes error loading `hasMany` relation without referenced key
 in data

---
 src/SaveRelationsBehavior.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SaveRelationsBehavior.php b/src/SaveRelationsBehavior.php
index 4811a5a..f7bea78 100644
--- a/src/SaveRelationsBehavior.php
+++ b/src/SaveRelationsBehavior.php
@@ -241,7 +241,7 @@ class SaveRelationsBehavior extends Behavior
                     $fks[$modelAttribute] = $data[$modelAttribute];
                 } elseif ($relation->multiple && !$relation->via) {
                     foreach ($link as $relatedAttribute => $relatedModelAttribute) {
-                        if (!isset($data[$relatedAttribute])) {
+                        if (!isset($data[$relatedAttribute]) && in_array($relatedAttribute, $modelClass::primaryKey())) {
                             $fks[$relatedAttribute] = $this->owner->{$relatedModelAttribute};
                         }
                     }