Need to refresh or reload the Purchase order from Purchase order line odoo 10
I need to refresh or reload my current Purchase order.
When i click the button in Purchase order line i need to reload or refresh the purchase order. So for that i add the reload method on "button click" but its not reload the purchase order
when i add this above code under "purchase.order" class its working but i need to write only in "purchase.order.line"
can anyone help me to resolve this.. ASAP