[merge] [minor] merged with master for serial_no updatess

selling/doctype/installation_note/installation_note.py

@@ -105,7 +105,6 @@ class DocType(TransactionBase):
 			msgprint("Please fetch items from Delivery Note selected", raise_exception=1)
 	
 	def on_update(self):
-		get_obj("Stock Ledger").scrub_serial_nos(self, 'installed_item_details')
 		webnotes.conn.set(self.doc, 'status', 'Draft')
 	
 	def on_submit(self):

selling/utils.py

@@ -71,9 +71,22 @@ def get_item_details(args):
 		pos_settings = get_pos_settings(args.company)
 		if pos_settings:
 			out.update(apply_pos_settings(pos_settings, out))
-
+		
+	if args.doctype in ("Sales Invoice", "Delivery Note"):
+		if item_bean.doc.has_serial_no and not args.serial_no:
+			out.serial_no = _get_serial_nos_by_fifo(args, item_bean)
+		
 	return out
-	
+
+def _get_serial_nos_by_fifo(args, item_bean):
+	return "\n".join(webnotes.conn.sql_list("""select name from `tabSerial No` 
+		where item_code=%(item_code)s and warehouse=%(warehouse)s and status='Available' 
+		order by timestamp(purchase_date, purchase_time) asc limit %(qty)s""", {
+			"item_code": args.item_code,
+			"warehouse": args.warehouse,
+			"qty": cint(args.qty)
+		}))
+
 def _get_item_code(barcode):
 	item_code = webnotes.conn.sql_list("""select name from `tabItem` where barcode=%s""", barcode)