[ADD]hr_negative_leave

hr_negative_leave/models/hr_leave.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+# Copyright (c) 2005-2006 Axelor SARL. (http://www.axelor.com)
+
+from odoo import api, models
+
+class HrLeave(models.Model):
+    _inherit = "hr.leave"
+
+    @api.constrains('state', 'number_of_days', 'holiday_status_id')
+    def _check_holidays(self):
+        # Keep only leaves that do not allow negative balances
+        to_check = self.filtered(lambda h: not h.holiday_status_id.allows_negative)
+        if to_check:
+            super(HrLeave, to_check)._check_holidays()