#Show the free subscription rate if the cart contains a subscription item
#Check to see if the cart contains a subscription item
Input.cart.line_items.each do |line_item|
if line_item.selling_plan_id
#Show the Free Subscription Shipping rate if the cart contains a subscription item otherwise hide it
Input.shipping_rates.delete_if do |shipping_rate|
if shipping_rate.name == 'Free Subscription Shipping'
if shipping_rate.name == 'Free Subscription Shipping'
Output.shipping_rates = Input.shipping_rates