To add an additional menu in action dropdown list on tree view, we need to register “ir.actions.server” and “ir.values” on the qweb/xml file as follow. Note that code field name is using old Odoo python API. <?xml version="1.0" encoding="utf-8"?> <openerp> <data> … <record id="action_cancel_request" model="ir.actions.server"> <field name="name">Cancel</field> <field name="type">ir.actions.server</field> <field name="model_id" ref="sale.model_sale_order" /> <field name="state">code</field> <field name="binding_model_id" ref="sale.model_sale_order" /> <field name="code">action = self.action_cancel(cr, uid, context.get(‘active_ids’, []), context=context)</field> </record> <record id="cancel_action_menu" model="ir.values"> <field eval="’client_action_multi’" name="key2"/> <field eval="’sale.order’" name="model"/> <field name="name">Cancel</field> <field eval="’ir.actions.server,%d’%action_cancel_request" name="value"/> </record> …. </data> </openerp> In your sale order model create the method as bellow with Odoo new API. …

Bellow code will help to manage many2many fields from model class. (0, 0, { values }) link to a new record that needs to be created with the given values dictionary (1, ID, { values }) update the linked record with id = ID (write values on it) (2, ID) remove and delete the linked record with id = ID (calls unlink on ID, that will delete the object completely, and the link to it as well) (3, ID) cut the link to the linked record with id = ID (delete the relationship between the two objects but does not …