在asp.net mvc 4中更改路由的URL

Question

In my application I am creating a record in one view & displaying it in other view. bellow are controller actions

    [HttpPost]
    public ActionResult Create(Domain.Entities.Survey survey)
    {
        ISurveyRepository surveyRepository = new DbSurveyRepository();
        surveyRepository.CreateSurvey(survey);
        TempData.Add("surveyID",survey.ID);
        return RedirectToAction("SingleSurvey");
    }

    public ActionResult SingleSurvey()
    {
        if (TempData["surveyID"] != null)
        {
            ISurveyRepository surveyRepository = new DbSurveyRepository();
            Domain.Entities.Survey survey = surveyRepository.GetBySurveyID((int) TempData["surveyID"]);
            return View(survey);
        }
        return View();
    }

There are two views 1. Create 2. SingleSurvey

Now when I return view "SingleSurvey" from action "SingleSurvey" the URL displayed on browser is http://localhost:49611/SingleSurvey .

But I want to change this URL. What I want is http://localhost:49611/SingleSurvey/{my record id}/{my record title}

Is there any way to do this ?

Answer 1

In your route config file add the following route:

routes.MapRoute(
    "SingleSurvey",
    "{controller}/{action}/{id}/{title}",
    new { controller = "Survey", action = "SingleSurvey", id = UrlParameter.Optional, title = UrlParameter.Optional }
);

Then update the create action to pass the ID and title as part of the route values:

[HttpPost]
public ActionResult Create(Domain.Entities.Survey survey)
{
    ISurveyRepository surveyRepository = new DbSurveyRepository();
    surveyRepository.CreateSurvey(survey);
    TempData.Add("surveyID",survey.ID);
    return RedirectToAction("SingleSurvey", new { id = survey.Id, title = survey.Title );
}

In additon, rather than using the TempData to pass the ID it is better to simply read the ID from the URL. To do this, update the SingleSurvey action to take in the ID as a parameter:

public ActionResult SingleSurvey(int? id)
{
    if (id != null)
    {
        ISurveyRepository surveyRepository = new DbSurveyRepository();
        Domain.Entities.Survey survey = surveyRepository.GetBySurveyID(id.Value);
        return View(survey);
    }
    return View();
}

The MVC framework automatically binds the id parameter defined in the route to the id parameter on the action method. If you need to use the title in the SingleSurvey action you can also add it as an extra parameter.

Answer 2

Add 2 nullable parameters to the get method

public ActionResult SingleSurvey(int? id, string title)
{
  // if id is not null, get the survey based on id
  return View(survey);
}

then in the post method, redirect with the parameters

[HttpPost]
public ActionResult Create(Domain.Entities.Survey survey)
{
    ISurveyRepository surveyRepository = new DbSurveyRepository();
    surveyRepository.CreateSurvey(survey);
    return RedirectToAction("SingleSurvey", new { id= survey.ID, title = survey.Title });
}

You might also want want to define a route so that the url is .../SingleSurvey/someID/someTitle rather than .../SingleSurvey?id=someID&title=someTitle

Side note: Its better performance to initialize a new instance of Survey and use return View(survey); rather than return View() in the case where you are creating a new survey