From 1b8b0c1137af36252929b7d0a2ca8b0d7a096f12 Mon Sep 17 00:00:00 2001
From: Mathieu Lutfy <mathieu@symbiotic.coop>
Date: Wed, 24 Mar 2021 17:06:27 -0400
Subject: [PATCH] File CustomField: avoid renaming an empty file

---
 CRM/Core/BAO/CustomField.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CRM/Core/BAO/CustomField.php b/CRM/Core/BAO/CustomField.php
index f45707ca96..ab42c14cc5 100644
--- a/CRM/Core/BAO/CustomField.php
+++ b/CRM/Core/BAO/CustomField.php
@@ -1551,6 +1551,13 @@ SELECT id
           $mimeType = $fileDAO->mime_type;
         }
       }
+      elseif (empty($value['name'])) {
+        // Happens when calling the API to update custom fields values, but the filename
+        // is empty, for an existing entity (in a specific case, was from a d7-webform
+        // that was updating a relationship with a File customfield, so $value['id'] was
+        // not empty, but the filename was empty.
+        return;
+      }
       else {
         $fName = $value['name'];
         $mimeType = $value['type'];
-- 
2.25.1