ID of updated record not coming through to the controller

[Eric]

Hello,

I have a grid setup and working with read (paging, sorting etc.) and create actions. I'm having trouble with the update. Basically, the ID does not come through with the rest of the request. I can see it in the browser's network tab, so it is being sent, but when the controller action is finally executed, it is missing from the parameter object.

View Index.cshtml

@using Kendo.Mvc.UI

@using Mvc.Models

 

@model IEnumerable<ConciergeModel>

 

@{

    ViewBag.Title = "Manage Live-Connect Concierge List";

    Layout = "~/Views/Shared/_Kendo.cshtml";

}

 

<h2>@ViewBag.Title</h2>

 

<h3>Server Side Initialization</h3>

 

@{

    try

    {

    @(Html.Kendo().Grid(Model)

    .Name("Concierge")

    .Columns(columns =>

    {

        columns.Bound(c => c.ConciergeId).Groupable(false).Width(40);

        columns.Bound(c => c.ConciergeName).Width(240);

        columns.Bound(c => c.ConciergeEmail).Width(480);

        columns.Command(command => command.Edit());

    })

    .ToolBar(toolbar =>

    {

        toolbar.Create();

    })

    .Editable(editable => editable.Mode(GridEditMode.Inline))

    .Pageable()

    .Sortable()

    .Scrollable()

    .DataSource( dataSource => dataSource

        .Ajax()

        .Model(model => model.Id(c => c.ConciergeId))

        .Create(create => create.Action("ConciergeCreate", "Concierge"))

        .Read(read => read.Action("ConciergeRead", "Concierge"))

        .Update(update => update.Action("ConciergeUpdate", "Concierge"))

    ))

    }

    catch(Exception e)

    {

        @Html.Raw("<pre>" + e + "</pre>");

    }

}

ConciergeModel.cs

using System.ComponentModel;

using System.ComponentModel.DataAnnotations;

 

namespace Mvc.Models

{

    public class ConciergeModel

    {

        public ConciergeModel() { }

 

        [Required]

        [DisplayName("ID")]

        public long ConciergeId { get; set; }

 

        [Required]

        [DisplayName("Name")]

        [DataType(DataType.Text)]

        public string ConciergeName { get; set; }

 

        [Required]

        [DisplayName("Email Address")]

        [DataType(DataType.EmailAddress)]

        public string ConciergeEmail { get; set; }

 

    }

}

And the controller action in ConciergeController.cs

// POST: /mvc/{admin-id}/Concierge/ConciergeUpdate

[AcceptVerbs(HttpVerbs.Post)]

public JsonResult ConciergeUpdate([DataSourceRequest] DataSourceRequest request,

    ConciergeModel concierge)

{

    if (concierge != null && ModelState.IsValid)

    {

        // At this point, concierge.ConciergeId is zero

        concierge.Update(_lccConciergeService);

    }

 

    return Json(new[] { concierge }.ToDataSourceResult(request, ModelState));

}

Here is an example request, taken from Firebug (FF 17.0)

Response Headers

Cache-Control	private
Content-Length	0
Date	Sun, 23 Dec 2012 23:19:15 GMT
Persistent-Auth	true
Server	Microsoft-IIS/8.0
X-AspNet-Version	4.0.30319
X-AspNetMvc-Version	3.0
X-Powered-By	ASP.NET
X-SourceFiles	=?UTF-8?B?QzpcTGVhZE1hc3RlclxMYXRlc3RccGxhdGZvcm1cTGVhZE1hc3RlclBsYXRmb3JtXEF3bC5MZWFkTWFzdGVyLk12Y1wxMjNcQ29uY2llcmdlc1xDb25jaWVyZ2VVcGRhdGU=?=

Request Headersview source

Accept	*/*
Accept-Encoding	gzip, deflate
Accept-Language	en-US,en;q=0.5
Cache-Control	no-cache
Connection	keep-alive
Content-Length	110
Content-Type	application/x-www-form-urlencoded; charset=UTF-8
Cookie	ASP.NET_SessionId=4ff34okn0jkkwqi3k0qswb4l
Host	localhost:7171
Pragma	no-cache
Referer	http://localhost:7171/mvc/123/Concierges/
User-Agent	Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0
X-Requested-With	XMLHttpRequest

Parametersapplication/x-www-form-urlencoded
ConciergeEmail	[e-mail]
ConciergeId	2
ConciergeName	Jim Bob
filter
group
sort

Source

sort=&group=&filter=&ConciergeId=2&ConciergeName=Jim+Bob&ConciergeEmail=jimbob%40allwebleadstransferportal.com

So you can see that the ID should be 2, but it is zero, which causes the update operation to fail - the dataservice can't run the update query without the ID.

At one point, I had the ID with a private setter and marked with a [ReadOnly(true)] attribute, but as you can see, I removed that and the problem persisted.

[Petur Subev]

Hello Eric,

Indeed your code looks valid and the MVC model binder should populate that field on the server. Can you assemble a project which we can run and investigate what's the reason for that behavior?

Thank you in advance for the cooperation.

Kind regards,
Petur Subev
the Telerik team

[Eric]

As I was packaging my project up to send to you guys, I tried a few more things and it started working. I'm not sure which change did the trick, if you could perhaps illuminate me, that would be much appreciated.

In Index.cshtml, I changed the Datasource model to the following:

.Model(model => {

    model.Id(c => c.ConciergeId);

    model.Field(c => c.ConciergeId).Editable(false);

})

In the Model.cs class, I removed the [Required] and [DisplayName] attributes from the ConciergeId field (which was the field that wasn't coming through).

And in the controller... Hmm I didn't really add anything, just a try/catch block around the update method. I added that when I was having some unrelated database connectivity problems. To be clear, the problem was already manifest before the update method was called.

Any Ideas?

[Petur Subev]

Hello Eric,

I am still not sure what could the the reason for this. A known issue is when the value is passed once through the form data and once through the query string (or as route parameter) and the value in the form data is empty string - however I do not think this is the case.

Kind regards,
Petur Subev
the Telerik team