/// <summary>
/// 获取可以销售的商品。
/// </summary>
/// <param name="itemEntity"></param>
/// <returns></returns>
public static ShoppingCartItemEntity ForSales(this ShoppingCartItemEntity itemEntity, Action <ShoppingCartItemEntity> extra = null)
{
if (itemEntity == null || !itemEntity.IsOnSaled)
{
return(null);
}
if (itemEntity.ForOrderQty - itemEntity.CartQuantity < 0)
{
return(null);
}
ShoppingCartItemEntity forSale = itemEntity.Clone();
if (extra != null)
{
extra(forSale);
}
return(forSale);
}
