Agregar fecha promesa pago

account_invoice.py

@@ -27,6 +27,9 @@ class account_invoice(models.Model):
         comodel_name='hr.employee',
         string='Cobrador'
     )
+    promesa_date = fields.Datetime(
+        string='Fecha Promesa Pago'
+    )
 
 
     _defaults = {

account_invoice_view.xml

@@ -10,6 +10,7 @@
                 <field name="account_id" position="after">
                         <field name="employee_id"/>
                         <field name="factconcobrador"/>
+                        <field name="promesa_date"/>
                 </field>
             </field>
         </record>