def create_from_cart(self, cart, request):
"""
This creates a new Order object (and all the rest) from a passed Cart
object.
Specifically, it creates an Order with corresponding OrderItems and
eventually corresponding ExtraPriceFields
This will only actually commit the transaction once the function exits
to minimize useless database access.
The `state` parameter is further passed to process_cart_item,
process_cart, and post_process_cart, so it can be used as a way to
store per-request arbitrary information.
Emits the ``processing`` signal.
"""
# must be imported here!
from shop.models.ordermodel import (
ExtraOrderItemPriceField,
ExtraOrderPriceField,
OrderItem,
)
from shop.models.cartmodel import CartItem
# First, let's remove old orders
self.remove_old_orders(cart)
# Create an empty order object
order = self.create_order_object(cart, request)
order.save()
# Let's serialize all the extra price arguments in DB
for field in cart.extra_price_fields:
eoi = ExtraOrderPriceField()
eoi.order = order
eoi.label = unicode(field[0])
eoi.value = field[1]
if len(field) == 3:
eoi.data = field[2]
eoi.save()
# There, now move on to the order items.
cart_items = CartItem.objects.filter(cart=cart)
for item in cart_items:
item.update(request)
order_item = OrderItem()
order_item.order = order
order_item.product_reference = item.product.get_product_reference()
order_item.product_name = item.product.get_name()
order_item.product = item.product
order_item.unit_price = item.product.get_price()
order_item.quantity = item.quantity
order_item.line_total = item.line_total
order_item.line_subtotal = item.line_subtotal
order_item.save()
# For each order item, we save the extra_price_fields to DB
for field in item.extra_price_fields:
eoi = ExtraOrderItemPriceField()
eoi.order_item = order_item
# Force unicode, in case it has àö...
eoi.label = unicode(field[0])
eoi.value = field[1]
if len(field) == 3:
eoi.data = field[2]
eoi.save()
processing.send(self.model, order=order, cart=cart)
return order
