def set_currency(cls):
"""Sets the currency for current session. A change in the currency
should reset the cart if the currency of the cart is not the same as
the one here
"""
Cart = Pool().get('nereid.cart')
rv = super(Website, cls).set_currency()
# TODO: If currency has changed drop the cart
# This behaviour needs serious improvement. Probably create a new cart
# with all items in this cart and then drop this one
cart = Cart.open_cart()
if cart.sale and cart.sale.currency.id != session['currency']:
Cart.clear_cart()
return rv
