Pre-filled model returns null in HttpPost

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Pre-filled model returns null in HttpPost

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#1 by (0 votes)

2

I'm building a page in the ASP.NET project where I have a model that contains 2 lists, which I fill in one initially in the get and then go to the View where I fill in another list, but when I receive this object, it returns me with all data in null, nor the initial data that I filled it comes.

ViewModel

public class ChamadoAvaliacaoViewModel
{
    public int Id { get; set; }
    public string Assunto { get; set; }
    [Display(Name = "Descrição")]
    public string Descricao { get; set; }
    [Display(Name = "Responsavel do Chamado")]
    public ApplicationUser ResponsavelChamado { get; set; }
    [Display(Name = "Solução")]
    public string Solucao { get; set; }
    [Display(Name = "Avaliação do Chamado")]
    public int AvaliacaoChamado { get; set; }
    [Display(Name = "Justificativa da Avaliação")]
    public string JustificativaAvaliacao { get; set; }
    public List<ChamadoTipoAvaliacao> ChamadoTiposAvaliacao { get; set; }
    public List<ChamadoAvaliacao> ChamadoAvaliacao { get; set; }
}

Actions

    [Authorize]
    public ActionResult AvaliacaoChamado(string id)
    {
        var chamado = new ChamadoDAO(db).BuscarChamadoId(Convert.ToInt32(id));
        if (chamado.StatusChamado.Value)
        {
            var model = new ChamadoAvaliacaoViewModel();
            model.Id = chamado.Id;
            model.Descricao = chamado.Descricao;
            model.Assunto = chamado.Assunto;
            model.Solucao = chamado.Solucao;
            model.ResponsavelChamado = chamado.ResponsavelChamado;
            model.ChamadoTiposAvaliacao = new ChamadoTipoAvaliacaoGN(db).retornarChamadoTipoAvaliacao();
            model.ChamadoAvaliacao = new List<ChamadoAvaliacao>();
            foreach (var ChamadoTipoAvaliacao in model.ChamadoTiposAvaliacao)
            {
                model.ChamadoAvaliacao.Add(new ChamadoAvaliacao());
            }
            return View(model);
        }
        else
        {
            TempData["notice"] = "Chamado não pode ser avaliado, pois ele não foi encerrado.";
            return RedirectToAction("Index", "Chamado");
        }
    }

    [HttpPost]
    public ActionResult AvaliacaoChamado(string id, ChamadoAvaliacaoViewModel chamadoAvaliacao)
    {
        var aGN = new ChamadoAvaliacaoGN(db);
        var cGN = new ChamadoGN(db);
        var chamado = new ChamadoDAO(db).BuscarChamadoId(Convert.ToInt32(id));
        foreach (var avaliacao in chamadoAvaliacao.ChamadoAvaliacao)
        {
            aGN.registrarAvaliacao(avaliacao);
        }
        cGN.RegistrarUltimaInteracao(Convert.ToInt32(id));
        TempData["notice"] = "Chamado Avaliado com Sucesso!";
        return RedirectToAction("Index", "Home");
    }

View

@for (int i = 0; i < Model.ChamadoTiposAvaliacao.Count; i++)
    {
        if (Model.ChamadoTiposAvaliacao[i].Id == 1)
        {
            <div class="form-group">
                @Html.Label(Model.ChamadoTiposAvaliacao[i].Titulo, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.TextAreaFor(model => model.ChamadoAvaliacao[i].Justificativa, htmlAttributes: new { @class = "form-control", Style = "height:130px" })
                    @Html.ValidationMessageFor(model => model.ChamadoAvaliacao[i].Justificativa, "", new { @class = "text-danger" })
                </div>
            </div>
        }
        else
        {
            <div class="form-group">
                @Html.Label(Model.ChamadoTiposAvaliacao[i].Titulo, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.TextAreaFor(model => model.ChamadoAvaliacao[i].Nota, htmlAttributes: new { @class = "rating rating-loading AvaliacaoChamado" })                        
                    @Html.ValidationMessageFor(model => model.ChamadoAvaliacao[i].Nota, "", new { @class = "text-danger" })
                </div>
            </div>
        }

    }

c# asp.net asp.net-mvc

asked by anonymous 12.09.2016 / 22:58

1 answer

What to do when the generated token expires? How to change the UUID of a partition via C code? [closed]

score 0 · Answer 1

In essence, TimeSpan, DateTime, Guid, Decimal, String, etc. primitive data types are well perceived by the ModelBinding. What you want is to POST the controller and pass a complex data type, which also contains complex type variables.

public class ChamadoAvaliacaoViewModel

contains

public List<ChamadoTipoAvaliacao> ChamadoTiposAvaliacao { get; set; }
public List<ChamadoAvaliacao> ChamadoAvaliacao { get; set; }

You have two solutions:

The first is html hardcode that contains Id's and Names according to the List.

The second is to have in the ViewModel an array for each list so that the Binding is done:

public class ChamadoTiposAvaliacaoViewModel{

public List<ChamadoTiposAvaliacao> ChamadoTiposAvaliacao{ get; set; }
public ChamadoTiposAvaliacaoPostViewModel[] ChamadoTiposAvaliacaoArray { get; set; }}

Second option view

@for (var itemCnt = 0; itemCnt < Model.ChamadoTiposAvaliacaoArray.Count(); itemCnt++){
<tr>
    <td></td>
    <td>
        @Html.TextBoxFor(m => Model.ChamadoTiposAvaliacaoArray[itemCnt].campo1)
        @Html.HiddenFor(m => Model.ChamadoTiposAvaliacaoArray[itemCnt].campo2)
</td></tr>}

[HttpPost]
public ActionResult AlgumaPostAction(int id, ChamadoTiposAvaliacaoViewModel model)
{
    //...