Add agent to booking

booking.py

@@ -144,6 +144,7 @@ class Booking(Workflow, ModelSQL, ModelView):
     channel_commission = fields.Function(fields.Numeric('Channel Commission',
         digits=(16, 2), depends=['lines']), 'get_channel_commission')
     commission = fields.Many2One('commission', 'Commission')
+    agent = fields.Many2One('commission.agent', 'Agent')
     channel_invoice = fields.Many2One('account.invoice', 'Channel Invoice',
         states={
             'invisible': ~Eval('channel'),
@@ -750,7 +751,7 @@ class Booking(Workflow, ModelSQL, ModelView):
         for folio in folios:
             bk = folio.booking
             price_list = bk.price_list
-            agent_id = bk.channel.agent.id if bk.channel else None
+            agent_id = bk.channel.agent.id if bk.channel else bk.agent
             for ch in folio.charges:
                 if ch.invoice_line:
                     continue

tryton.cfg

@@ -1,5 +1,5 @@
 [tryton]
-version=6.0.102
+version=6.0.103
 depends:
     party
     company

view/booking_form.xml

@@ -65,6 +65,8 @@ this repository contains the full copyright notices and license terms. -->
             <field name="currency"/>
             <label name="price_list"/>
             <field name="price_list" widget="selection"/>
+            <label name="agent"/>
+            <field name="agent"/>
             <label name="credit_card"/>
             <field name="credit_card"/>
             <label name="guarantee"/>