From c2fb0c3bdedec6a6db24e9d5b14135a901df7399 Mon Sep 17 00:00:00 2001
From: Achilles Rasquinha <achillesrasquinha@gmail.com>
Date: Thu, 22 Feb 2018 18:05:38 +0530
Subject: [PATCH] conditional check for single docs (#5060)

---
 frappe/model/rename_doc.py | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/frappe/model/rename_doc.py b/frappe/model/rename_doc.py
index 039ad9502b..a84556ca63 100644
--- a/frappe/model/rename_doc.py
+++ b/frappe/model/rename_doc.py
@@ -400,21 +400,22 @@ def update_linked_doctypes(parent, child, name, value):
 	product_list = list_combinatrix(parent_list, child_list)
 
 	for d in product_list:
-		frappe.db.sql("""
-			update
-				`tab{doctype}`
-			set
-				{fieldname} = "{value}"
-			where
-				{parent_fieldname} = "{docname}"
-				and {fieldname} != "{value}"
-		""".format(
-			doctype = d['parent']['parent'],
-			fieldname = d['child']['fieldname'],
-			parent_fieldname = d['parent']['fieldname'],
-			value = value,
-			docname = name
-		))
+		if not d['parent']['issingle']:
+			frappe.db.sql("""
+				update
+					`tab{doctype}`
+				set
+					{fieldname} = "{value}"
+				where
+					{parent_fieldname} = "{docname}"
+					and {fieldname} != "{value}"
+			""".format(
+				doctype = d['parent']['parent'],
+				fieldname = d['child']['fieldname'],
+				parent_fieldname = d['parent']['fieldname'],
+				value = frappe.db.escape(value),
+				docname = frappe.db.escape(name)
+			))
 
 def list_combinatrix(dict1, dict2):
 	""" form all possible products with the given lists elements """