Почему не сохраняется первый .savechanges(); post метода?

При нажатии на кнопку осуществляется переход на view "Ready" из метода post,Order.Name отображается корректно. Но в бд order не заносится. Почему не срабатывает первый savachanges? Сontroller

public class Some : Controller
    {

        private AppDbContext context;
        public Some(AppDbContext ctx)
        {
            context = ctx;
        }
[Httpost]
public ActionResult Buy(int? id, string Price,Order order)
        {
            if (id == null) return RedirectToAction("Index");



                using (var transaction = context.Database.BeginTransaction())
                {
                    context.Orders.Add(order)
                    context.SaveChanges();

                    if(Price!=null)
                    {var ty=context.Phones.Where(p => 
                     p.PhoneId==id).FirstOrDefault();
                    context.Price1=Price+150;
                    }
                    context.SaveChanges();
                    transaction.Commit();


                }
                return View("Buy");
              }
               public ActionResult Ready(int? id, string OrderName)
                {
                    ViewBag.PhoneId = id;
                    ViewBag.OrderName = OrderName;
                    return View();

                }
          }
      }

Startup

 public void ConfigureServices(IServiceCollection services)
        {


            services.AddDbContext<AppDbContext>(options =>
            options.UseSqlServer(Configuration["Data:AppDb:ConnectionString"]));

            services.AddTransient<Some>();}

Context class

  public class AppDbContext : DbContext
    {


        public AppDbContext(DbContextOptions<AviaAppDbContext> options)
            : base(options) 
        {

        }
        public DbSet<Phone> Phones { get; set; }
        public DbSet<Order> Orders { get; set; }

appsettings

"AllowedHosts": "*",
  "Data": {
    "AppDb": {
      "ConnectionString": "Server=(localdb)\\MSSQLLocalDB;Database=AppDb;Trusted_Connection=True;MultipleActiveResultSets=true"
    }

View

@using System.Linq;
@using System;


@model List<Searchphone>



@{
    ViewBag.Title = "PhoneId";
}


<h2 class="orderinformation">Order Data</h2>
<form method="post" class="formpass" asp-action="Ready" asp-controller="Some">
    <input type="hidden" id="PhoneId"value="@ViewBag.PhoneId" name="PhoneId">
    <label for="OrderSurName">Surname</label><br>
    <input type="text" placeholder="Enter Surname" name="OrderSurName" required><br>

    <label for="OrderName">Имя</label><br>
    <input type="text" placeholder="Enter Name" name="OrderName" required><br>
    <button type="submit" class="button7">Next</button>

</form>