Данная ошибка выявляется в коде при нажатии на кнопку "добавить в корзину" или при указания пути контроллера
public class ShopCart
{
private readonly AppDBContent appDBContent;
public ShopCart(AppDBContent appDBContent)
{
this.appDBContent = appDBContent;
}
public string ShopCartId { get; set; }
public List<ShopCartItem> listShopItems { get; set; }
public static ShopCart GetCart(IServiceProvider services)
{
ISession session = services.GetRequiredService<IHttpContextAccessor>()?.HttpContext.Session;
var context = services.GetService<AppDBContent>();
string shopCartId = session.GetString("CartId") ?? Guid.NewGuid().ToString();
session.SetString("CartId", shopCartId);
return new ShopCart(context) { ShopCartId = shopCartId };
}
public void AddToCart(Car car)
{
appDBContent.ShopCartItem.Add(new ShopCartItem {
ShopCartId = ShopCartId,
car = car,
price = car.price
});
appDBContent.SaveChanges();
}
public List<ShopCartItem> getShopItems()
{
return appDBContent.ShopCartItem.Where(c => c.ShopCartId == ShopCartId).Include(s => s.car).ToList();
}
}
public class ShopCartController : Controller
{
private readonly IAllCars _carRep;
private readonly ShopCart _shopCart;
public ShopCartController(IAllCars carRep, ShopCart shopCart)
{
_carRep = carRep;
_shopCart = shopCart;
}
public ViewResult Index()
{
var items = _shopCart.getShopItems();
_shopCart.listShopItems = items;
var obj = new ShopCartViewModel
{
shopCart = _shopCart
};
return View(obj);
}
public RedirectToActionResult addToCart(int id)
{
var item = _carRep.Cars.FirstOrDefault(i => i.id == id);
if(item != null)
{
_shopCart.AddToCart(item);
}
return RedirectToAction("Index");
}
}
@model ShopCartViewModel
<div class="container">
@foreach(var el in Model.shopCart.listShopItems)
{
<div class="alert alert-warning mt-3">
<b>Автомобиль:</b>@el.car.name<br/>
<b>Цена:</b>@el.car.price.ToString("c")
</div>
}
<hr />
<a class="btn btn-danger" asp-controller="Order" asp-action="Checkout">Оплатить</a>
</div>
public class Startup
{
private IConfigurationRoot _confSting;
public Startup(IWebHostEnvironment hostEnv)
{
_confSting = new ConfigurationBuilder().SetBasePath(hostEnv.ContentRootPath).AddJsonFile("dbsettings.json").Build();
}
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<AppDBContent>(options => options.UseSqlServer(_confSting.GetConnectionString("DefaultConnection")));
services.AddControllersWithViews();
services.AddTransient<IAllCars, CarRepository>();
services.AddTransient<ICarsCategory, CategoryRepository>();
services.AddTransient<IAllOrders, OrdersRepository>();
services.AddTransient<ShopCart>();
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
services.AddScoped(sp => ShopCart.GetCart(sp));
services.AddSession();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseRouting();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapControllerRoute(
name: "categoryFilter",
pattern: "Car/{action}/{category?}", defaults: new { Controller="Car", action="List"});
});
app.UseStaticFiles();
using (var scope = app.ApplicationServices.CreateScope())
{
AppDBContent content = scope.ServiceProvider.GetRequiredService<AppDBContent>();
DBObjects.Initial(content);
}
}
}
https://github.com/Alexey411/asp.netcoremvc
