[IMP] - permit contract selection without contract_template_id

product_contract/models/sale_order_line.py

@@ -181,7 +181,9 @@ class SaleOrderLine(models.Model):
                     predecessor_contract_line = rec.contract_line_id
             if predecessor_contract_line:
                 new_contract_line = contract_line_env.create(
-                    rec._prepare_contract_line_values(contract, predecessor_contract_line.id)
+                    rec._prepare_contract_line_values(
+                        contract, predecessor_contract_line.id
+                    )
                 )
                 predecessor_contract_line.successor_contract_line_id = (
                     new_contract_line
@@ -210,7 +212,8 @@ class SaleOrderLine(models.Model):
         for rec in self:
             if rec.contract_id:
                 if (
-                    rec.contract_template_id
+                    rec.contract_id.contract_template_id
+                    and rec.contract_template_id
                     != rec.contract_id.contract_template_id
                 ):
                     raise ValidationError(

product_contract/views/sale_order.xml

@@ -29,8 +29,13 @@
                    position="after">
                 <field name="contract_template_id" invisible="1"/>
                 <field name="contract_id"
+                       options='{"no_create": True}'
                        attrs="{'invisible': [('is_contract', '=', False)]}"
-                       domain="[('partner_id','=',parent.partner_id),('contract_template_id','=',contract_template_id)]"/>
+                       domain="['|',('contract_template_id','=',contract_template_id),
+                       ('contract_template_id','=',False),
+                       ('partner_id','=',parent.partner_id),
+                       ('recurring_invoices','=',True),
+                       ]"/>
                 <field name="contract_line_id"
                        attrs="{'invisible': [('is_contract', '=', False)]}"
                        domain="[('contract_id','=',contract_id)]"/>