Hi Tanzil

You calculate the object from controller using "request" .

example

from openerp import http
from openerp.http import request

@http.route('/foo', type='http', website=True)
    def action_foo(self, **kw):
         bar = 1 # You calculate the id of object and assign. I gave 1 for example.
         obj = request.env['custom.contact.addresses'].search([('id', '=', bar)])
         return request.render('YourModule.YourTemplate',             {'website':obj, })

You can use in template

     <t t-esc="website.field_name"/>

All the best !