private static Order SaveAsOrder(ShoppingCart shoppingCart)
{
Order order;
using (var context = new OrderContext())
{
// TODO 8.3: Look for existing order by uniquifier.
var matchingOrders =
from o in context.Orders
where o.Uniquifier == shoppingCart.Uniquifier
select o;
order = matchingOrders.FirstOrDefault();
if (order != null)
return order;
order = new Order
{
Item = shoppingCart.Item,
// TODO 8.4: Copy uniquifier.
Uniquifier = shoppingCart.Uniquifier
};
context.Orders.Add(order);
context.SaveChanges();
}
return order;
}
