fleet_work_order_multiple_route_from_cargo_address/views/fleet_work_order_views.xml
<?xml version="1.0" encoding="utf-8" ?>
<!-- Copyright 2016 OpenSynergy Indonesia
License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
<openerp>
<data>
<record id="fleet_work_order_view_form" model="ir.ui.view">
<field name="name">fleet.work.order form - Create Route From Cargo</field>
<field name="model">fleet.work.order</field>
<field name="inherit_id" ref="fleet_work_order_cargo.fleet_work_order_view_form" />
<field name="arch" type="xml">
<xpath expr="//header/field[@name='state']" position="before">
<button
name="%(create_route_from_cargo_action)d"
string="Create Route From Cargo"
type="action"
states="draft,confirmed"
/>
</xpath>
</field>
</record>
</data>
</openerp>