public ActionResult Edit(string id, EditTransactionViewModel model)
 {
     if (ModelState.IsValid)
     {
         var command = new EditTransactionCommand
         {
             ID = model.Id, Amount = model.Amount,
             Date = model.Date, Reciever = model.Reciever,
             Confirmed = model.Confirmed, Sender = model.Sender
         };
         this.invoker.Execute(command);
         return RedirectToAction("Index");
     }
     model.Users = this.userService.GetUsers();
     return View(model);
 }
 //
 // GET: /Transaction/Edit/5
 public ActionResult Edit(string id)
 {
     var vm = new EditTransactionViewModel
     {
         Amount = this.transactionService.GetTransaction(id).Amount,
         Date = this.transactionService.GetTransaction(id).Date,
         Sender = this.transactionService.GetTransaction(id).Sender.Id,
         Reciever = this.transactionService.GetTransaction(id).Reciever.Id,
         Confirmed = this.transactionService.GetTransaction(id).Confirmed,
         Users = this.userService.GetUsers()
     };
     return View(vm);
 }