MVC 4 Modal window, partial view and validation

By : Traffy
Source: Stackoverflow.com
Question!

I'm using MVC4 & Entity Framework to develop a web application. I have a table which enumerates all the persons I have in my DB. For each of them, I can edit their info throught a modal window which is a Partial View. However, when I put some wrong information, my application redirects me to my partial view. What I wanted to do is to display the errors into my modal window.

My action :

[HttpGet]
public ActionResult EditPerson(long id)
{
    var person = db.Persons.Single(p => p.Id_Person == id);

    ViewBag.Id_ProductPackageCategory = new SelectList(db.ProductPackageCategories, "Id_ProductPackageCategory", "Name", person.Id_ProductPackageCategory);

    return PartialView("_EditPerson", person);
}

[HttpPost]
public ActionResult EditPerson(Person person)
{

    ViewBag.Id_ProductPackageCategory = new SelectList(db.ProductPackageCategories, "Id_ProductPackageCategory", "Name", person.Id_ProductPackageCategory);

    if (ModelState.IsValid)
    {
        ModelStateDictionary errorDictionary = Validator.isValid(person);

        if (errorDictionary.Count > 0)
        {
            ModelState.Merge(errorDictionary);
            return PartialView("_EditPerson", person);
        }

        db.Persons.Attach(person);
        db.ObjectStateManager.ChangeObjectState(person, EntityState.Modified);
        db.SaveChanges();
        return View("Index");
    }

    return PartialView("_EditPerson", person);
}

My partial view :

@model BuSIMaterial.Models.Person

<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
    <h3 id="myModalLabel">Edit</h3>
</div>
<div>

@using (Ajax.BeginForm("EditPerson", "Person", FormMethod.Post,
                    new AjaxOptions
                    {
                        InsertionMode = InsertionMode.Replace,
                        HttpMethod = "POST",
                        UpdateTargetId = "table"
                    }))
{

    @Html.ValidationSummary()
    @Html.AntiForgeryToken()

    @Html.HiddenFor(model => model.Id_Person)

    <div class="modal-body">
       <div class="editor-label">
            First name :
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.FirstName, new { maxlength = 50 })
            @Html.ValidationMessageFor(model => model.FirstName)
        </div>
        <div class="editor-label">
            Last name :
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.LastName, new { maxlength = 50 })
            @Html.ValidationMessageFor(model => model.LastName)
        </div>
        <div class="editor-label">
            National number :
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.NumNat, new { maxlength = 11 })
            @Html.ValidationMessageFor(model => model.NumNat)
        </div>
        <div class="editor-label">
            Start date :
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.StartDate, new { @class = "datepicker", @Value = Model.StartDate.ToString("yyyy/MM/dd") })
            @Html.ValidationMessageFor(model => model.StartDate)
        </div>
        <div class="editor-label">
            End date :
        </div>
        <div class="editor-field">
            @if (Model.EndDate.HasValue)
            {
                @Html.TextBoxFor(model => model.EndDate, new { @class = "datepicker", @Value = Model.EndDate.Value.ToString("yyyy/MM/dd") })
                @Html.ValidationMessageFor(model => model.EndDate)
            }
            else
            {
                @Html.TextBoxFor(model => model.EndDate, new { @class = "datepicker" })
                @Html.ValidationMessageFor(model => model.EndDate)
            }
        </div>
        <div class="editor-label">
            Distance House - Work (km) :
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.HouseToWorkKilometers)
            @Html.ValidationMessageFor(model => model.HouseToWorkKilometers)
        </div>
        <div class="editor-label">
            Category :
        </div>
        <div class="editor-field">
            @Html.DropDownList("Id_ProductPackageCategory", "Choose one ...")
            @Html.ValidationMessageFor(model => model.Id_ProductPackageCategory) <a href="../ProductPackageCategory/Create">
                Add a new category?</a>
        </div>
        <div class="editor-label">
            Upgrade? :
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Upgrade)
            @Html.ValidationMessageFor(model => model.Upgrade)
        </div>
    </div>
    <div class="modal-footer">
        <button class="btn btn-inverse" id="save" type="submit">Save</button>
    </div>
}

</div>

My script which is in the Index view :

        $('.edit-person').click(function () {
               var id = $(this).data("id");
               var url = '/Person/EditPerson/'+id;
               $.get(url, function(data) {

                   $('#edit-person-container').html(data);
                   $('#edit-person').modal('show');

               });
        });

Also, as you can see, I have put a size for my textboxes but in my modal, it seems to not be taken into account. Any ideas for these issues?

By : Traffy


Answers

This worked for me:

//allow the validation framework to re-prase the DOM
jQuery.validator.unobtrusive.parse();    
//or to give the parser some context, supply it with a selector
//jQuery validator will parse all child elements (deep) starting
//from the selector element supplied
jQuery.validator.unobtrusive.parse("#formId");
// and then:
$("#formId").valid()

Taken from Here

By : ofirbt


Have you added the following script to the layout or the view containing the partial? jquery.unobtrusive-ajax.min.js. This is required for asynchronous requests and is not added by default but is present within a new solution under Scripts.



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