Cart: Adding Items

This HTTP POST request will add an item to the cart and redirect the user to a URL of your choice.

HTTP POST /cart/add

Required Params:

product_inventory_id
quantity (integer)
redirect_to (any valid DS url) 

Optional Params:

donation_amount
product_fields (array)
recurring_with_initial_charge (1,0)
recurring_day (1-28)
recurring_day_of_week (1-7)
recurring_frequency (weekly, biweekly, monthly, quarterly, annually)
is_tribute (1,0)
tribute_name
tribute_type_id
tribute_notify (email,letter)
tribute_notify_at
tribute_message
tribute_notify_name
tribute_notify_email
tribute_notify_address
tribute_notify_city
tribute_notify_state
tribute_notify_zip
tribute_notify_country