<?xml version="1.0" encoding="UTF-8" ?> <odoo> <record id="view_attachment_form_mail_preview_base" model="ir.ui.view"> <field name="model">ir.attachment</field> <field name="inherit_id" ref="base.view_attachment_form" /> <field name="priority">99</field> <field name="arch" type="xml"> <xpath expr="//field[@name='datas']" position="attributes"> <attribute name="widget">preview_binary</attribute> </xpath> </field> </record> </odoo>