/// <summary>
/// 使用指定的商品数量，更新购物篮中的项目。
/// </summary>
/// <param name="shoppingCartItemID">需要更新的购物篮项目的全局唯一标识。</param>
/// <param name="quantity">商品数量。</param>
public void UpdateShoppingCartItem(Guid shoppingCartItemID, int quantity)
{
var shoppingCartItem = shoppingCartItemRepository.Get(shoppingCartItemID);
shoppingCartItem.UpdateQuantity(quantity);
shoppingCartItemRepository.Update(shoppingCartItem);
Context.Commit();
}
public ShoppingCart UpdateItem(int shoppingCartItemId, int quantity, int userId)
{
if (quantity < 0)
{
throw new Exception("Quantity cannot be less than zero");
}
ShoppingCartItem item = shoppingCartItemRepository.Get(shoppingCartItemId);
if (item == null)
{
throw new Exception($"Item with id {shoppingCartItemId} was not found");
}
if (quantity == 0)
{
shoppingCartItemRepository.Delete(item.Id);
}
else
{
item.Quantity = quantity;
shoppingCartItemRepository.Update(item);
}
return(GetCart(item.ShoppingCartId));
}
