public static ProductPriceHistoryService GetInstance()
{
if (instance == null)
{
instance = new ProductPriceHistoryService();
}
return(instance);
}
public override Product Update(Product item)
{
base.Update(item);
ProductPriceHistoryService.Add(
new ProductPriceHistory()
{
ProductID = item.ID,
Price = item.Cost,
StartDate = DateTime.Now
}
);
return(item);
}
public IEnumerable <Order> GetOrdersByUserID(string id)
{
var context = new ApplicationDbContext();
var resOrders = context.Orders.Where(a => a.UserID == id).Include(b => b.Products);
foreach (var order in resOrders)
{
order.TotalCost2 = 0;
foreach (var product in order.Products) // orderedProduct
{
order.TotalCost2 += ProductPriceHistoryService.GetProductPriceByDate(product.RealProductID, order.OrderDate) * product.ProductQuantity;
}
}
return(resOrders);
}