[IMP] - Improve UX, open contract form if the sale order is related to one (same for contract)

product_contract/models/contract.py

@@ -30,10 +30,14 @@ class ContractContract(models.Model):
         orders = self.contract_line_ids.mapped(
             'sale_order_line_id.order_id'
         )
-        return {
+        action = {
             "name": _("Sales Orders"),
             "view_mode": "tree,form",
             "res_model": "sale.order",
             "type": "ir.actions.act_window",
             "domain": [("id", "in", orders.ids)],
         }
+        if len(orders) == 1:
+            # If there is only one order, open it directly
+            action.update({'view_mode': "form", "res_id": orders.id})
+        return action

product_contract/models/sale_order.py

@@ -119,4 +119,15 @@ class SaleOrder(models.Model):
             .mapped('contract_id')
         )
         action["domain"] = [("id", "in", contracts.ids)]
+        if len(contracts) == 1:
+            # If there is only one contract, open it directly
+            action.update(
+                {
+                    "res_id": contracts.id,
+                    "view_mode": "form",
+                    "views": filter(
+                        lambda view: view[1] == 'form', action['views']
+                    ),
+                }
+            )
         return action