Footer with sum in one2many_list odoo 9

Question

How define gray footer under one2many_list for sum, eg. https://postimg.org/image/jc9alzoeh/

Answer 1

Just in the embedded tree of your One2many field add sum="Title":

    <field name="o2m_field_name" >
        <tree>
            ...
            <field name="field_name" sum="Total field name"/>
        </tree>
        <form>
        ....
        ...
        </form>
    </field