odoo, how to create a correct xpath expression

Question

I'm doing the odoo getting started tutorial. And I need to create a xpath expression. I need to inherit the base.view_users_form view and add page to display a list of properties. This page should go after the preferences page, so I created this expresssion.

<record id="inherited_res_user_view_form" model="ir.ui.view">
    <field name="name">res.users.extended.form</field>
    <field name="model">res.users</field>
    <field name="inherit_id" ref="base.view_users_form"/>
    <field name="arch" type="xml">
        <xpath expr="//page[@name='preferences']" position="after">
            <field name="property_ids"/>
        </xpath>
    </field>
</record>

and the error:

Element '<xpath expr="//page[@name='preferences']">' cannot be located in parent view

So I know my expression is incorrect, but I dont know what it should be.

I also don't know how I can find out. I read a bit about how it works, and I think I understand sufficiently. But I think I need to see the source code of base.view_users_form to find how they name their elements so that I can properly use xpath. But I can't find the source code also.

Answer 1

If you look carefully in the view_users_form code, you will see that the page is named references and not preferences.

Try the following XPath:

<xpath expr="//page[@name='references']" position="after">
    <page string="Properties" name="property_ids">
        <field name="property_ids"/>
    </page>
</xpath>