Total order cost isn't displayed

[SIRICHOT MANEECHOT]

Hello Everyone,

I am a very newbie Django-Oscar, I have decided to go my first E-commorce website with Django-Oscar.

Just something I have stacked with them for days,

1. I would like to the Total order cost on homepage (not only in Basket.html) But I doesn't display.

                 {% if order_total.is_tax_known %}

                           {{ order_total.incl_tax|currency:basket.currency }}

                 {% else %}

                           {{ order_total.excl_tax|currency:basket.currency }}

                 {% endif %}

It doesn't work on my homepage

2. As well as Shipping cost.

Is there any one can kindly help me. 

Thank you so much for your help.

Peach.