我刚开始使用asp.net mvc。我想添加服务车。我有用sql脚本编写的该项目的数据库，例如：
Create table [Laundries].[CartItems](
[Id] BIGINT IDENTITY (1, 1) NOT NULL,
[CartId] BIGINT NOT NULL,
[Price] FLOAT NOT NULL,
[ServiceId] BIGINT NOT NULL,
[UserId] BIGINT NULL,
[Quantity] BIGINT NOT NULL,
CONSTRAINT [PK_Laundries.Carts] PRIMARY KEY CLUSTERED ([Id] ASC),
CONSTRAINT [FK_Laundries.Services] FOREIGN KEY([ServiceId])
REFERENCES [Laundries].[Services]([Id]),
CONSTRAINT [FK_Laundries.Carts1] FOREIGN KEY([UserId])
REFERENCES [Core].[Users]([Id]),
）;
我有购物车服务
using Ideo.Mvc.Data.Model;
using Ideo.Mvc.Data.Model.Core;
using Ideo.Mvc.Data.Model.Laundries;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
namespace Ideo.Mvc.Data.Services.Core
{
public partial class ShoppingCart
{
long? ShoppingCartId { get; set; }
public const string CartSessionKey = "CartId";
#region GetCart()
public static List<CartItem> GetCart(long? userId)
{
List<CartItem> listOfItemsInCart;
using (var context = Context.Read())
{
listOfItemsInCart = context.Query<CartItem>().
Where
(
p => p.UserId == userId).
ToList()
;
}
return listOfItemsInCart;
}
#endregion
#region GetList()
public static IEnumerable<TResult> GetList<TResult>(IPager pager, long? cartId = null, int? quantity = null, long? serviceId = null)
{
using (var context = Context.Read())
{
var query = context.Query<CartItem>().AsQueryable();
if (cartId != null)
{
query = query.Where(p => p.CartId.Equals(cartId));
}
if (quantity != null)
{
query = query.Where(p => p.Quantity.Equals(quantity));
}
if (quantity != null)
{
query = query.Where(p => p.Quantity.Equals(quantity));
}
if (serviceId != null)
{
query = query.Where(p => p.ServiceId.Equals(serviceId));
}
//query = query.Where(p => p.IsActive == true && p.IsVerified == true);
return query
.Pager(pager)
.GetResult<TResult>();
}
}
#endregion
//public static ShoppingCart GetCart()
//{
// // redirect
//}
#region AddToCart()
public void AddToCart(Service service)//
{
CartItem cartItem;
using (var context = Context.Read())
{
cartItem = context.Query<CartItem>().
SingleOrDefault(
p => p.CartId == ShoppingCartId
&& p.ServiceId == service.Id);//
}
if (cartItem == null)
{
cartItem = new CartItem
{
ServiceId = service.Id,
CartId = ShoppingCartId,
Quantity = 1,
};
using (var context = Context.Write())
{
context.Create(cartItem);
context.SaveChanges();
}
}
}
#endregion
public int RemoveFromCart(long id)
{
CartItem cartItem;
using (var context = Context.Read())
{
cartItem = context.Query<CartItem>().
Single(
p => p.CartId == ShoppingCartId
&& p.ServiceId == id);
}
int itemCount = 0;
if (cartItem != null)
{
if (cartItem.Quantity > 1)
{
cartItem.Quantity--;
itemCount = cartItem.Quantity;
using (var context = Context.Write())
{
context.Update(cartItem);
context.SaveChanges();
}
}
else
{
using (var context = Context.Write())
{
context.Delete(cartItem);
context.SaveChanges();
}
}
}
return itemCount;
}
public void EmptyCart()
{
List<CartItem> cartItems;
using (var context = Context.Read())
{
cartItems = context.Query<CartItem>().
Where(
p => p.CartId == ShoppingCartId).
ToList();
}
foreach (var cartItem in cartItems)
{
using (var context = Context.Write())
{
context.Delete(cartItem);
context.SaveChanges();
}
}
}
public List<CartItem> GetCartItems()
{
List<CartItem> cartItems;
using (var context = Context.Read())
{
cartItems = context.Query<CartItem>().
Where(
p => p.Id == ShoppingCartId).
ToList();
}
return cartItems;
}
public int GetCount()
{
int? count;
using (var context = Context.Read())
{
count = context.Query<CartItem>().
Where(
p => p.Id == ShoppingCartId).
Select(p => p.Quantity).
Sum();
}
return count ?? 0;
}
public double GetTotal()
{
float? total;
using (var context = Context.Read())
{
total = context.Query<CartItem>().
Where(
p => p.Id == ShoppingCartId).
Select(p => p.Quantity * p.Service.ServicePrice).Cast<float?>()
.Sum();
}
return total ?? 0;
}
public long CreateOrder(Orders order)
{
double? orderTotal = 0;
var cartItems = GetCartItems();
foreach (var item in cartItems)
{
var orderDetail = new OrdersDetalis
{
ServiceId = item.ServiceId,
OrderId = order.Id,
NetPrice = item.Service.ServicePrice,
GrossPrice = (item.Service.ServicePrice * 1.23),
Quantity = item.Quantity
};
orderTotal += item.Quantity * item.Service.ServicePrice;
using (var context = Context.Write())
{
context.Create(orderDetail);
context.SaveChanges();
}
}
order.SumNetPrice = orderTotal;
order.OrderDateUtc = DateTime.Now;
order.StatusId = 1;
//TODO wyliczanie kolejnego zamówienia
order.OrderNumber = Convert.ToString(DateTime.Now.Year) + "/" + order.Laundry + "/" + 1;
using (var context = Context.Write())
{
context.Create(order);
context.SaveChanges();
}
EmptyCart();
return order.Id;
}
public long? GetCartId(long? userId)
{
long? cartId;
using (var context = Context.Read())
{
var query = context.Query<CartItem>().AsQueryable();
query = query.Where(p => p.UserId == userId);
cartId = query.FirstOrDefault().Id;
}
return cartId;
}
// When a user has logged in, migrate their shopping cart to
// be associated with their username
//public void MigrateCart(long userId)
//{
// List<CartItem> shoppingCart;
// //ShoppingCartService shoppingCart;
// using (var context = Context.Read())
// {
// var query = context.Query<CartItem>().AsQueryable();
// query = query.Where(p => p.UserId == UserId);
// query = query.Where(p => p.CityId == CityId);
// return query.FirstOrDefault();
// }
// foreach (Cart item in shoppingCart)
// {
// item.CartId = userName;
// }
// storeDB.SaveChanges();
//}
}
}
和控制器
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Ideo.Mvc.Data.Model.Core;
using Ideo.Mvc.Data.Services.Core;
using Microsoft.AspNet.Identity;
using Ideo.Mvc.Data.Model.Laundries;
using Ideo.Mvc.Web.Areas.Default.Models.Carts;
namespace Ideo.Mvc.Web.Areas.Default.Controllers
{
public partial class ShoppingCartController : Controller
{
public virtual ActionResult Index()
{
var userID = Convert.ToInt64(User.Identity.GetUserId());
var viewModel = new ShoppingCartViewModel
{
CartItems = ShoppingCart.GetCart(userID),
};
return View(viewModel);
}
//[HttpPost]
//[ActionName("List")]
//[ValidateAntiForgeryToken]
//#region List()
//public virtual ActionResult List(ShoppingCartDataSource dataSource)
//{
// dataSource.Data = ShoppingCart.GetList<CartListViewModel>(
// dataSource,
// dataSource.CartId,
// dataSource.Quantity,
// dataSource.DateCreated,
// dataSource.UserId
// );
// return View(MVC.Default.ShoppingCart.Views.ViewNames.List, dataSource);
//}
//#endregion
public virtual ActionResult AddToCart(Service service)
{
var userID = Convert.ToInt64(User.Identity.GetUserId());
var cart = ShoppingCart.GetCart(userID);
ShoppingCart.AddToCart(service);
return RedirectToAction("Index");
}
[HttpPost]
public virtual ActionResult RemoveFromCart(long id)
{
var userID = Convert.ToInt64(User.Identity.GetUserId());
var cart = ShoppingCart.GetCart(userID);
string serviceName = "andrzej";//TODO getServiceNameById(id)
// Remove from cart
int itemCount = cart.RemoveFromCart(id);
// Display the confirmation message
var results = new ShoppingCartRemoveViewModel
{
Message = Server.HtmlEncode(serviceName) +
"[[[ zotał usunięty z twojego koszyka]]]",
CartTotal = cart.GetTotal(),
CartCount = cart.GetCount(),
ItemCount = itemCount,
DeleteId = id
};
return Json(results);
}
//
// [HttpPost]
// GET: /ShoppingCart/CartSummary
//[ChildActionOnly]
public virtual ActionResult CartSummary()
{
long? userID = Convert.ToInt64(User.Identity.GetUserId());
var cart = ShoppingCart.GetCart(userID);
ViewData["CartCount"] = cart.GetCount();
return PartialView("CartSummary");
}
//[HttpPost]
//public virtual ActionResult CreateOrder()
//{
// var userID = Convert.ToInt64(User.Identity.GetUserId());
// var cart = ShoppingCart.GetCart(userID);
//}
}
}
我知道它搞砸了 我想再次重写它，但我不明白我何时进入shoopingcart / index，但出现标题为“实体类型CartItem不属于当前上下文模型的一部分”之类的错误
这是购物车中所有物品的购物视图。这是基本的。我必须在此视图上工作，但首先我需要对控制器/服务进行排序。 @using Ideo.Mvc.Web.Areas.Default.Models @model CmpnyMessageDataSource
@foreach (var message in Model.Data)
{
using (var p = Html.Bootstrap().Begin(new Panel()))
{
@p.Heading(@message.Date.ToString("g"));
using (p.BeginBody())
{
<p>@message.Content</p>
}
// @p.Footer()
}
}