From cb613bbd69dfe200cdd2731fb094f9ee3bdc99e4 Mon Sep 17 00:00:00 2001
From: Bogdan Abaev <bogdan@zotero.org>
Date: Wed, 14 Jun 2023 15:15:27 -0400
Subject: [PATCH] prevent 500 error on parentItem=false in item creation

Only set parentItem if it is a truth-y value.
Fixes #109
---
 model/Items.inc.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/model/Items.inc.php b/model/Items.inc.php
index df08d0c6e..6caf5de69 100644
--- a/model/Items.inc.php
+++ b/model/Items.inc.php
@@ -1697,7 +1697,9 @@ public static function updateFromJSON(Zotero_Item $item,
 					continue 2;
 				
 				case 'parentItem':
-					$item->setSourceKey($val);
+					if ($val) {
+						$item->setSourceKey($val);
+					}
 					break;
 				
 				case 'creators':