Solved bug when the BelongsTo value is null

Author: sertxudev

src/Fields/BelongsTo.php

@@ -122,6 +122,8 @@ private function getOriginalValueEdit($model) {
 
     $item = $model[$this->data->get('column')];
 
+    if (!$item) return null;
+
     return [
       'key' => $item[$query->getOwnerKeyName()],
       'value' => $item[$this->data->get('display_column')]
@@ -136,6 +138,8 @@ private function getOriginalValueShow($model) {
     $query = $model->{$this->data->get('column')}();
     $item = $model[$this->data->get('column')];
 
+    if (!$item) return null;
+
     return [
       'key' => $item[$query->getOwnerKeyName()],
       'value' => $item[$this->data->get('display_column')]
@@ -176,6 +180,8 @@ private function getTranslatedValueEdit($model) {
 
     $item = $model[$this->data->get('column')];
 
+    if (!$item) return null;
+
     return [
       'key' => $item[$query->getOwnerKeyName()],
       'value' => $item->getTranslated($this->data->get('display_column'), request()->input('lang'))
@@ -190,6 +196,8 @@ private function getTranslatedValueShow($model) {
     $query = $model->{$this->data->get('column')}();
     $item = $model[$this->data->get('column')];
 
+    if (!$item) return null;
+
     return [
       'key' => $item[$query->getOwnerKeyName()],
       'value' => $item->getTranslated($this->data->get('display_column'), request()->input('lang'))