def find_item_discount(item):
all_discounts = discounts.get_all()
all_discounts.sort(key=lambda x: x.timestamp_utc)
for d in all_discounts:
if d.discount_scope == discounts.DiscountScope.ITEM_ONLY:
if item.id() == d.obj_id:
item.before_discount = item.price
item.price = get_discounted_price(item, d)
return True
if d.discount_scope == discounts.DiscountScope.CONTAINER_WIDE:
if item.container_id == d.obj_id:
item.before_discount = item.price
item.price = get_discounted_price(item, d)
return True
def apply_discounts(order_obj):
"""
Given an order, updates the order with prevailing discount rules
onto the order's debit attribute
"""
all_dedits = order_obj.debits
other_debit = filter(lambda x: x["coll_name"] != discounts.Discount.coll_name(), all_dedits)
all_discounts = discounts.get_all()
valid_discounts = []
for item_dic in order_obj.items:
for d in all_discounts:
item_obj = items.get(coerce_bson_id(item_dic["obj_id"]))
if item_obj is None: continue
if discounts.valid_on_item(d, item_obj):
valid_discounts += [{
"obj_id": d._id,
"coll_name": discounts.Discount.coll_name(),
"amount": discounts.discounted_value(item_obj.price, d),
}]
break
order_obj.debits = other_debit + valid_discounts
return valid_discounts