Bdtjtk

In a Razor page I want to change the data of an entity. The data is loaded in OnGet and saved in OnPost. The data that is loaded in OnGet is saved to a property called Person. At a later time I can simply retrieve them in OnPost (it's the identical object).

However, if I use a handler called by an Ajax call, the property object is initialized (integer properties are 0, object properties are zero) but it is not the original object anymore.

What do I have to do so that the original object is also available in the handler called by the Ajax call?

I already tried to use [BindProperty] attribute and to use a hidden input in the razor page. Or to access ViewData.Model But is does not work. Person and other data of the model is still kind of null.

Ajax-Call:

function addEntitlement() {

        var vacationEntitlement = {};

        vacationEntitlement["Year"] = $('#newEntitlementYear').val();

        vacationEntitlement["Days"] = $('#newEntitlementDays').val();

        vacationEntitlement["PersonID"] = $('#hiddenPersonID').val();

        $.ajax({

            type: "POST",

            url: "./Edit?handler=AddEntitlement",

            beforeSend: function (xhr) {

                xhr.setRequestHeader("XSRF-TOKEN",

                    $('input:hidden[name="__RequestVerificationToken"]').val());

            },

            contentType: "application/json; charset=utf-8",

            dataType: "json",

            data: JSON.stringify(vacationEntitlement)

        }).fail(function () {

            alert('error');

        }).done(function () {

        });

    }

PageModel:

    public IActionResult OnGet(int? id)

    {

        if (id == null)

        {

            return NotFound();

        }



        Person = _unitOfWork.PersonRepository.GetByID(id);



        if (Person == null)

        {

            return NotFound();

        }



        return Page();

    }



    public JsonResult OnPostAddEntitlement([FromBody] VacationEntitlement vacationEntitlement)

    {

      ///Tried to acces Person or ViewData.Model.Person here.

      ///But Person is just intialized but does not contain the expected data.

    }

Try using TempData it allows you to pass data from one action to another action

Person = _unitOfWork.PersonRepository.GetByID(id);

TempData["Person"] = Person

then

public JsonResult OnPostAddEntitlement([FromBody] VacationEntitlement vacationEntitlement)

{

   if(TempData.ContainsKey("Person")) {

     var person = TempData["Person"] as Person; /* (as Person} I just assume the class name is Person */

     // place your logic here

   }

}

and also make sure to properly setup your TempData configuration
https://docs.microsoft.com/en-us/aspnet/core/fundamentals/app-state?view=aspnetcore-2.2#tempdata