Pass 2 parameters into view - asp.net-mvc

Question

I've got a view where I create new object and pass it to another view:
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "ID,carID,DateFrom,DateTo,UserID")] Reservation reservation)
{
if (ModelState.IsValid)
{
return RedirectToAction("ChooseCars",reservation);
}
return View(reservation);
}
in "ChooseCars" I have:
public ActionResult ChooseCars(Reservation reservation)
{
var reservations = db.Reservations.ToList();
var cars = db.Cars.ToList();
var reservationsResult = reservations.Where(res => res.DateFrom <= reservation.DateFrom && res.DateTo >= reservation.DateTo);
if (reservationsResult != null)
{
emptyCars = cars.Where(c => !reservationsResult.Any(y => y.carID == c.ID));
cars = emptyCars.ToList();
}
return View(cars);
}
and in that "ChooseCars" view I populate table with list of Cars that haven't been reserved.. Now I need to somehow pass that reservation and chosen car (by id) to some method where I create new "reservation" object containing carId.
What is the best way to do that?
I wrote a method, but I have no idea how to route those parameters to it:
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult AddReservation([Bind(Include = "ID,carID,DateFrom,DateTo,UserID")] Reservation reservation, int? id)
{
Reservation finalReservation = new Reservation(id, reservation.DateFrom, reservation.DateTo, reservation.UserID);
db.Reservations.Add(finalReservation);
return View();
}
How it looks:

Answer 1

Your editing data, so the first thing is to create a view model(s) representing want you want to edit/display in the view. In your case you need the start and end dates, a collection of Car and the selected car.
public class ReservationVM // add validation and display attributes as appropriate
{
public DateTime StartDate { get; set; }
public DateTime EndDate { get; set; }
public int? SelectedCar { get; set; }
public IEnumerable<Car> AvailableCars { get; set; }
}
And your controller methods will be
[HttpGet]
public ActionResult Create()
{
ReservationVM model = new ReservationVM();
return View(model);
}
[HttpPost]
public ActionResult Create(ReservationVM model)
{
if (!ModelState.IsValid)
{
return View(model);
}
var availableCars = ... // your query to load the collection of cars basd on the dates
if (!availableCars.Any())
{
ModelState.AddModelError("", "There are no cars available for these dates");
return View(model);
}
model.AvailableCars = availableCars;
return View("SelectCar", model);
}
[HttpPost]
public ActionResult Confirm(ReservationVM model)
{
// Initialize new Reservation, save and redirect
Reservation reservation = new Reservation()
{
StartDate = model.StartDate,
EndDate = model.EndDate,
CarId = model.SelectedCar.Value,
UserId = ... // current user?
};
db.Reservations.Add(reservation);
db.SaveChanges();
return RedirectToAction(....);`
}
And the views will be
Create.cshtml
#model ReservationVM
...
#using (Html.BeginForm())
{
#Html.TextBoxFor(m => m.StartDate)
#Html.TextBoxFor(m => m.EndDate)
<input type="submit" value="Next" />
}
SelectCar.cshtml
#model ReservationVM
....
<table>
#foreach(var car in Model.AvailableCars)
{
<tr>
<td>#car.Make</td>
<td>#car.Model</td>
....
<td>
#using (Html.BeginForm("Confirm", "Home", new { StartDate = Model.StartDate, EndDate = Model.EndDate, SelectedCar = car.ID }))
{
<input type="submit" value="Reserve" />
}
</td>
</tr>
}
</table>