[ADD] Contract: payment term

contract/models/contract.py

@@ -47,6 +47,10 @@ class AccountAnalyticAccount(models.Model):
     date_end = fields.Date(
         compute='_compute_date_end', string='Date End', store=True
     )
+    payment_term_id = fields.Many2one(
+        comodel_name='account.payment.term',
+        string='Payment Terms',
+    )
 
     @api.depends('recurring_invoice_line_ids.date_end')
     def _compute_date_end(self):

contract/views/contract.xml

@@ -43,6 +43,7 @@
                     <group name="main">
                         <group>
                             <field name="partner_id" required="1"/>
+                            <field name="payment_term_id"/>
                             <field name="user_id"/>
                         </group>
                         <group>