/// <summary>
/// 从购物车商品生成显示信息
/// 生成后会设置购物车商品Id到附加数据
/// </summary>
/// <param name="cartProduct">购物车商品</param>
/// <returns></returns>
public static OrderProductDisplayInfo ToOrderProductDisplayInfo(
this CartProduct cartProduct)
{
var parameters = cartProduct.ToCreateOrderProductParameters();
var userId = cartProduct.Buyer == null ? null : (long?)cartProduct.Buyer.Id;
var displayInfo = parameters.ToOrderProductDisplayInfo(userId);
displayInfo.Extra["cartProductId"] = cartProduct.Id;
return(displayInfo);
}