[IMP] sale_ux: update taxes when position fiscal change

sale_ux/README.rst

@@ -36,6 +36,7 @@ Several Improvements to sales:
 #. Add filter to be able to select an analytic account on sale orders with the same partner/commercial partner as the sale order.
 #. Add tracking to payment terms on sale orders.
 #. Add the field "Internal Notes" in the sales order form and the setting to allow propagating the "Internal Notes" to invoices.
+#. Automatically refresh taxes when changing fiscal position
 
 Installation
 ============

sale_ux/models/sale_order.py

@@ -77,6 +77,17 @@ def _onchange_pricelist_id_show_update_prices(self):
                 'show_update_pricelist': False,
             })
 
+    @api.onchange('fiscal_position_id')
+    def _onchange_fiscal_position_id(self):
+        """
+        No utilizamos el método action_update_taxes() directamente porque no funciona
+        el message_post sin que se encuentre guardado el registro. 
+        """
+        self.ensure_one()
+        lines_to_recompute = self.order_line.filtered(lambda line: not line.display_type)
+        lines_to_recompute._compute_tax_id()
+        self.show_update_fpos = False
+
     def action_cancel(self):
         invoices = self.mapped('invoice_ids').filtered(
             lambda x: x.state not in ['cancel', 'draft'])