access values of one2many fields on kanban view odoo

Why i can't access values of one2many field on kanabn view . i need to loop over them to access them but it only return the number of records that's it. I have tried this code but it is'nt working

<kanban>
<field name="one2manyFieldname"/>
<templates>
    <t t-name="kanban-box">
        <div class="oe_kanban_content">
            <p>
               <t t-foreach="record.one2manyFieldname.raw_value" t-as='o'>
                   <t t-esc="o.name"/><field name="name"/><br/>
               </t>
            </p>
        </div>
    </t>
</templates>

instead of getting values i am getting blank result.Kindly help on this problem.Thank You

You Can also set the customized module from the odoo addons

You can install and use it as per your Odoo version

One2many Field Developed By SerpentCS :

https://apps.openerp.com/apps/modules/8.0/web_one2many_kanban/