new module

bemade_partner_email_domain/models/res_partner.py

@@ -1,5 +1,6 @@
 from odoo import api, fields, models, Command
 
+
 class Partner(models.Model):
     _inherit = 'res.partner'
 

bemade_update_validity_date_when_send_so/__init__.py

@@ -0,0 +1 @@
+from . import models

bemade_update_validity_date_when_send_so/__manifest__.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+{
+    "name": "Update sale quotation date when sent",
+    "version": "15.0.0.0.1",
+    "category": "Extra Tools",
+    'summary': 'Update sale quotation date and validity when pressing send button',
+    "description": """
+        Update sale quotation date and validity when pressing send button
+    """,
+    "author": "Bemade",
+    'website': 'https://www.bemade.org',
+    "depends": [
+        'sale_management'
+    ],
+    "data": [
+    ],
+    "auto_install": False,
+    "installable": True,
+    'license': 'OPL-1'
+}

bemade_update_validity_date_when_send_so/models/__init__.py

@@ -0,0 +1 @@
+from . import sale_order

bemade_update_validity_date_when_send_so/models/sale_order.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from datetime import datetime, timedelta
+from itertools import groupby
+import json
+
+from odoo import api, fields, models, SUPERUSER_ID, _
+from odoo.exceptions import AccessError, UserError, ValidationError
+from odoo.osv import expression
+from odoo.tools import float_is_zero, html_keep_url, is_html_empty
+
+from odoo.addons.payment import utils as payment_utils
+
+
+class SaleOrder(models.Model):
+    _inherit = "sale.order"
+
+    def action_quotation_send(self):
+        self.ensure_one()
+        self.date_order = datetime.now()
+        self.validity_date = datetime.now() + timedelta(days=30)
+        super(SaleOrder, self).action_quotation_send()
+