From fc5ce044e6835e5197aa541ad2dba2c0915c1109 Mon Sep 17 00:00:00 2001
From: Ankush Menat <ankush@frappe.io>
Date: Thu, 29 Feb 2024 16:34:14 +0530
Subject: [PATCH] fix: prevent deletion if document is locked

---
 frappe/model/delete_doc.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/frappe/model/delete_doc.py b/frappe/model/delete_doc.py
index 47aea6a836..e64c50af91 100644
--- a/frappe/model/delete_doc.py
+++ b/frappe/model/delete_doc.py
@@ -104,7 +104,17 @@ def delete_doc(
 					pass
 
 		else:
-			doc = frappe.get_doc(doctype, name, for_update=True)
+			# Lock the doc without waiting
+			try:
+				frappe.db.get_value(doctype, name, for_update=True, wait=False)
+			except frappe.QueryTimeoutError:
+				frappe.throw(
+					_(
+						"This document can not be deleted right now as it's being modified by another user. Please try again after some time."
+					),
+					exc=frappe.QueryTimeoutError,
+				)
+			doc = frappe.get_doc(doctype, name)
 
 			if not for_reload:
 				update_flags(doc, flags, ignore_permissions)