view/account.xml

   1 <openerp>
   2     <data>
   3         <record id="view_invoice_form" model="ir.ui.view">
   4             <field name="name">account.invoice.form</field>
   5             <field name="model">account.invoice</field>
   6             <field name="inherit_id" ref="account.invoice_form"/>
   7             <field name="priority" eval="8"/>
   8             <field name="arch" type="xml">
   9                 <xpath expr="//button[@name='action_invoice_sent']" position="after">
  10                     <button string="Sent by Email" type="object" name="action_invoice_sent" attrs="{'invisible': ['|', ('sent','=', True), ('state', '!=', 'paid')]}"/>
  11                 </xpath>
  12             </field>
  13         </record>
  14     </data>
  15 </openerp>