From eaed402cfbabc7b5e470b369fd02e83c3dcefbe8 Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Fri, 10 May 2024 12:21:31 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#1918

---
 wire/modules/Inputfield/InputfieldFile/InputfieldFile.module | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/wire/modules/Inputfield/InputfieldFile/InputfieldFile.module b/wire/modules/Inputfield/InputfieldFile/InputfieldFile.module
index 1dd36394..cdd31d63 100644
--- a/wire/modules/Inputfield/InputfieldFile/InputfieldFile.module
+++ b/wire/modules/Inputfield/InputfieldFile/InputfieldFile.module
@@ -668,9 +668,9 @@ class InputfieldFile extends Inputfield implements InputfieldItemList, Inputfiel
 			$fieldName = (string) $this->hasField;
 		}
 
-		$postUrl = $page->editUrl();
+		$postUrl = $page ? $page->editUrl() : '';
 
-		if($nameAttr != $fieldName) {
+		if($nameAttr != $fieldName && $fieldName && $postUrl) {
 			// file context for output after upload in case upload starts from a 
 			// page that is different from the one where the the file actually lives,
 			// but file upload is posted to the correct page. this ensures the resulting