HttpGet Attribute ignored on RedirectToAction?

I have a controller with an action Review like so:

    [HttpPost, HttpGet]
    [RoleRequired("Payroll Tech")]
    public ActionResult Review(ReviewModel model)
    {
        PayrollManagement.Importer importer = new PayrollManagement.Importer(
            ConfigurationManager.ConnectionStrings["ImportDatabase"].ConnectionString,
            model);

        model.Discrepancies = importer.GetDiscrepancyReport();
        return View(model);
    }

    [RoleRequired("Payroll Tech")]
    public ActionResult Review()
    {
        ReviewModel model = new ReviewModel();
        model.Initialize();  //initializes the dropdown collections
        model.Discrepancies = new List<DiscrepancyReportItem>();
        return View(model);
    }

I am trying to invoke this method on a RedirectToAction call from my Upload method:

    [HttpPost]
    [RoleRequired("Payroll Tech")]
    public ActionResult Upload(UploadModel model)
    {
        string tmpFile = Path.GetTempFileName();
        model.File.SaveAs(tmpFile);
        PayrollManagement.Importer importer = new PayrollManagement.Importer(
            ConfigurationManager.ConnectionStrings["ImportDatabase"].ConnectionString,
            model);

        importer.UploadExcelDocument(tmpFile);
        return RedirectToAction("Review", (IImporterFileInfo)model);
    }

This seems to work appropriately, in that when the Upload event is called, the redirect adds the model elements to the URL, which I would expect to be mapped to the ReviewModel object.

Instead, the generic Review (not HttpPost or HttpGet) is invoked, which is not what I would expe开发者_运维知识库ct. Why is it not mapping to the model and persisting the data? What can I do to make the core data in the IImporterFileInfo interface carry on to the next screen, wizard-like?

I will include the model structure as well, so ppl can see what I'm trying to do.

public class BaseModel : IImporterFileInfo
{

    [Display(Name = "Financial System:")]
    public string FinancialSystem { get; set; }

    [Display(Name = "Fiscal Year:")]
    public int FiscalYear { get; set; }

    [Display(Name = "Fiscal Week:")]
    public int FiscalWeek { get; set; }

    [Display(Name = "Accrual File?")]
    public bool IsAccrual { get; set; }

    [Display(Name="Accrual Month:")]
    public int AccrualMonth { get; set; }

    public void Initialize()
    {
        this.FinancialSystem = "Legacy";
        this.FiscalWeek = CultureInfo.CurrentCulture.Calendar.GetWeekOfYear(DateTime.Now, CalendarWeekRule.FirstDay, DayOfWeek.Monday);
        this.FiscalYear = DateTime.Now.Year;
        this.AccrualMonth = DateTime.Now.Month;
    }

    //the readonly lists
    private IList<string> _FinancialSystems;
    public IList<string> FinancialSystems
    {
        get
        {
            if (_FinancialSystems == null)
            {
                IList<string> choices = new List<string>();
                choices.Add("Legacy");
                choices.Add("Morris");
                _FinancialSystems = choices;
                //_FinancialSystems = new SelectList(choices, this.FinancialSystem ?? "Legacy");
            }
            return _FinancialSystems;
        }
    }

    private IList<int> _FiscalWeeks;
    public IList<int> FiscalWeeks
    {
        get
        {
            if (_FiscalWeeks == null)
            {
                IList<int> choices = new List<int>();
                for (int i = 1; i <= 53; i++)
                {
                    choices.Add(i);
                }
                _FiscalWeeks = choices;
            }
            return _FiscalWeeks;
        }
    }

    private IList<int> _FiscalYears;
    public IList<int> FiscalYears
    {
        get
        {
            if (_FiscalYears == null)
            {
                IList<int> choices = new List<int>();
                for (int i = DateTime.Now.Year - 7; i <= DateTime.Now.Year + 1; i++)
                {
                    choices.Add(i);
                }
                _FiscalYears = choices;
            }
            return _FiscalYears;
        }
    }

    private IList<int> _AccrualMonths;
    public IList<int> AccrualMonths
    {
        get
        {
            if (_AccrualMonths == null)
            {
                IList<int> choices = new List<int>();
                for (int i = 1; i <= 12; i++)
                {
                    choices.Add(i);
                }
                _AccrualMonths = choices;
            }
            return _AccrualMonths;
        }
    }

}

public class UploadModel : BaseModel
{
    [Display(Name = "File Name:")]
    public HttpPostedFileBase File { get; set; }
}

public class ReviewModel : BaseModel
{
    public IList<DiscrepancyReportItem> Discrepancies { get; set; }
}

I think this should work pretty well. Dunno why it doesn't. The query string looks like:

https://localhost:44301/Import/Review?File=System.Web.HttpPostedFileWrapper&FinancialSystem=Legacy&FiscalYear=2011&FiscalWeek=33&IsAccrual=True&AccrualMonth=8&FinancialSystems=System.Collections.Generic.List`1%5BSystem.String%5D&FiscalWeeks=System.Collections.Generic.List`1%5BSystem.Int32%5D&FiscalYears=System.Collections.Generic.List`1%5BSystem.Int32%5D&AccrualMonths=System.Collections.Generic.List`1%5BSystem.Int32%5D

You will need to create a ReviewModel instance and pass it on the redirect.

take a look at this question, one option you could do is use TempData, hold the model or whatever you will need in the next call

MVC - Passing Data with RedirectToAction()

You are passing upload model to a method which is expecting a ReviewModel. You need to pass a ReviewModel.