Child actions are not allowed to perform redirect actions. MVC 5

Question

On my homepage, there’s a shortcut button that opens a modal, and inside that modal is a partialView which points to a action within another controller. Until then quiet.

<div class="modal fade" id="modalCreate" tabindex="-1" role="dialog" aria-labelledby="createClasseModal">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-body">
                   @Html.Action("Create","Classes")
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Cancelar</button>
                </div>
            </div>
        </div>
    </div> 

When opening the modal with the partial view being correctly displayed for inclusion of the information. After inclusion, the routine executes the savechanges correctly in the controller, then he gives a RedirectToAction to return to the home screen.

 [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create([Bind(Include = "id,descricao,dia_1,dia_2,horario,dt_inicio,dt_termino,sala,limite_max,limite_min,preco,status,professor")] Classe classe)
    {
        ViewBag.professor = new SelectList(db.Pessoa, "id", "nome", classe.professor);
        if (ModelState.IsValid)
        {
            db.Classe.Add(classe);
            db.SaveChanges();
            return RedirectToAction("Index");

        }

        return View(classe);
    }

There in the debug he goes back to the index, and at the time of redesigning the screen with the modal, it accuses the error:

Does anyone have any idea how to fix this?

Answer 1

The error already says it all. You cannot use a Action call for a View to redirect requests. The reason is to avoid cascading redirects.

The correct in your case would be View main do the POST(by the modal itself). The modal can be assembled through a partial in Javascript without necessarily calling a Action:

@Html.Partial("_MinhaModal", Model)