Internal server error 500 on Ajax actions

[Szymon]

Hi all,

I found many posts here and there about this error, but none seemed to fit my scenario.
My grid is fairly simple, almost like the one form the sample app. I renamed my columns and added a column template to display "Edit" and "Details" links, and having to add a "Render()" action.

Now anytime a want to use AJAX (filtering, paging, refreshing), I get an "Error! The requested URL returned 500 - error"
Further investigation with FireBug tells me that the server returnd this:

The partial view '_Index' was not found. The following locations were searched:
~/Views/InternalProposal/_Index.aspx
~/Views/InternalProposal/_Index.ascx
~/Views/Shared/_Index.aspx
~/Views/Shared/_Index.ascx

and so on...

I am totaly lost. I suspect the added "render()" action to mess things up..

This is my view:

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <h2>
        Internal Proposal</h2>
    <% if (Model.Count() == 0)
           {%>
    DB empty
    <%
            }
           else
           {%>
    <% Html.Telerik().Grid(Model)
        .Name("Grid")
        .Columns(columns =>
        {
            columns.Bound(o => o.caseID).Title("#Case").Width(80);
            columns.Bound(o => o.status).Title("Status");
            columns.Bound(o => o.id_agree).Title("#Agree");
            columns.Bound(o => o.date_reg).Format("{0:dd/MM/yyyy}").Width(80).Title("Registration Date");
            columns.Bound(o => o.car_vin_no).Width(160).Title("VIN");
            columns.Bound(o => o.date_reply).Format("{0:dd/MM/yyyy}").Width(80).Title("Reply date");
            columns.Bound(o => o.user_reply).Title("User Reply");
            columns.Template(o =>
                {%>
    <%=Html.ActionLink("Edit", "Edit", new {id = o.id_main})%>
    |
    <%=Html.ActionLink("Details", "Details", new {id = o.id_main})%>
    <%})
                .ClientTemplate("<a href='" + Url.Action("Edit", "InternalProposal") + "/<# id_main #>Edit</a>" +
                                " | <a href='" + Url.Action("Details", "InternalProposal") + "/<# id_main #>Details</a>").Title(
                                    "").Width(100);

        })
        .DataBinding(dataBinding =>
        {
            dataBinding.Server().Select("Index", "InternalProposal", new { ajax =
                ViewData["ajax"] });
            dataBinding.Ajax().Select("_Index", "InternalProposal").Enabled((bool)ViewData["ajax"]);
        })
        .Scrollable(scrolling => scrolling.Enabled((bool)ViewData["scrolling"]))
        .Sortable(sorting => sorting.Enabled((bool)ViewData["sorting"]))
        .Pageable(paging => paging.Enabled((bool)ViewData["paging"]))
        .Filterable(filtering => filtering.Enabled((bool)ViewData["filtering"]))
        .Groupable(grouping => grouping.Enabled((bool)ViewData["grouping"]))
        .Footer((bool)ViewData["showFooter"])
        .Render();%>

    <%}%>
    <br />
    <p>
        <%: Html.ActionLink("Add Proposal", "Create") %>
    </p>
</asp:Content>

This is my controller:

public ActionResult Index(bool? ajax, bool? scrolling, bool? paging, bool? filtering, bool? sorting,
    bool? grouping, bool? showFooter)
{
    ViewData["ajax"] = ajax ?? true;
    ViewData["scrolling"] = scrolling ?? true;
    ViewData["paging"] = paging ?? true;
    ViewData["filtering"] = filtering ?? true;
    ViewData["grouping"] = grouping ?? true;
    ViewData["sorting"] = sorting ?? true;
    ViewData["showFooter"] = showFooter ?? true;

    var viewModel = new InternalProposalHeader[] { };
    viewModel = GetIntenalProposalHeaders(providerID); //ProviderID - from session info
    return View(viewModel);
}


//Action for Telerik Grid AJAX
[GridAction]
public ActionResult _Index()
{
    var viewModel = new InternalProposalHeader[] { };
    viewModel = GetIntenalProposalHeaders(providerID); //ProviderID - from session info
    return PartialView(viewModel);
}

[Atanas Korchev]

Hi Szymon,

 You must use the GridModel class as specified in the documentation.

All the best,
Atanas Korchev
the Telerik team

[Szymon]

Hi Atanas!

Thank you! Indeed I forgot the GridModel(Model) thingee. The internal server error disapeared, but I still can't get my AJAX functions working.
Now I get this error:

o.display is not a function

:(

Best regards.
Szymon

[Atanas Korchev]

Hello Szymon,

 Is there a chance to send us a sample project? This is not a known problem and we are not sure what may be causing it.

Regards,
Atanas Korchev
the Telerik team

[Szymon]

Hi Atanas!

While prepering the sample project a found the bug.
The problem was within the "ClientTemplate" parameter - a link for ajax. I mixed things up around inside there.
Was:

.ClientTemplate("<a href='"
+ Url.Action("Edit", "InternalProposal")
+ "/<# id_main #>Edit</a>"
+ " | <a href='"
+ Url.Action("Details", "InternalProposal")
+ "/<# id_main #>Details</a>");

Should be 

.ClientTemplate("<a href='"
+ Url.Action("Edit", "InternalProposal")
+ "/<#=id_main#>'>Edit</a> "
+ "| <a href='"
+ Url.Action("Details", "InternalProposal")
+ "/<#=id_main#>'>Details</a>")

Thank you

Best Regards,
Szymon

[Forest]

I'm having this same exact issue.  It works fine outside of Ajax, but when I try to use Ajax, I get the same: Error! The requested URL returned 500 - error. 

Just downloaded the extensions today fro Nuget.  I will support a ticket with my sample project if this is not a known bug.  Please advise.