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DropDown on Edit in Grid

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Brendon
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Brendon asked on 11 Nov 2012, 02:27 AM
Trying to get a drop down to display during the edit of a foreign key column. The examples all provided appear overly complex and I am unable to get my code functioning. Furthermore, the ASPX and Razor examples do not match their HTML counterparts. The examples also use ViewData and another uses a "Template". I am unable to unwind all the different parts of the examples since they are not self-contained.

http://demos.kendoui.com/web/grid/foreignkeycolumn.html

My Code Simplified:

@(Html.Kendo().Grid<Business.EquipmentModel>()
    .Name("Grid")
    .Columns(columns =>
    {
        columns.Bound(e => e.EquipmentId);
        columns.Bound(e => e.Make);
        columns.Bound(e => e.Model);
        columns.Bound(e => e.EquipmentTypeId);
        columns.ForeignKey(e => e.EquipmentTypeId, (System.Collections.IEnumerable)Business.EquipmentTypeModel.All(), "EquipmentTypeId", "EquipmentTypeName");
        columns.Bound(e => e.FacilityId);
        columns.Command(command => { command.Edit(); command.Destroy(); }).Width(200);
    })
    .ToolBar(toolbar => toolbar.Create())
    .Editable(editable => editable.Mode(GridEditMode.InLine))
    .Pageable()
    .Sortable()
    .Scrollable()
    .Filterable()
    .DataSource(dataSource => dataSource
        .Ajax()
        .Model(model => model.Id(e => e.EquipmentId))
        .Read(read => read.Action("Equipment_Read", "Facilities"))
        .Create(update => update.Action("Equipment_Create", "Facilities"))
        .Update(update => update.Action("Equipment_Update", "Facilities"))
        .Destroy(update => update.Action("Equipment_Destroy", "Facilities"))
    )
)
In non-edit mode, the EquipmentTypeName resolves correctly, but upon edit, the EquipmentTypeId is displayed (as an int). I need to bind a dropdown in edit mode to a model action.

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Evan
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answered on 13 Nov 2012, 08:09 PM
I definitely understand your frustration.  Be sure you have GridForeignKey.cshtml in your Views -> Shared -> EditorTemplates folder.  Be sure your model property is not a nullable int.  Are you working off the downloaded examples or the examples on the web?  Better to download them.  For me, it's here: C:\Program Files (x86)\Telerik\Kendo UI Trial Q2 2012\wrappers\aspnetmvc\Examples
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Brendon
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answered on 14 Nov 2012, 10:43 PM
That was it...I was completely unaware of these "EditTemplates". Dropped those in and it just works. Would be helpful if that is documented somewhere in the Kendo MVC setup...maybe it is and I missed it.

Thanks.
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Brendon
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answered on 14 Nov 2012, 11:15 PM
So, that works for updating a record, but fails on creating a record. I'm using inline add. The dropdown appears and is selectable, but the value of EquipmentTypeId is not returned (0 is returned) with the model to the add function.

Razor
@model List<Business.EquipmentModel>
@(Html.Kendo().Grid(Model)
    .Name("Grid")
    .Columns(columns =>
    {
        columns.Bound(e => e.EquipmentId).Title("Id").Width(50);
        columns.Bound(e => e.Description).Template(@<text></text>).ClientTemplate("<a href='" + Url.Action("Details", "Equipment") + "/#=EquipmentId#'>#=Description#</a>");
        columns.Bound(e => e.Make);
        columns.Bound(e => e.Model);
        columns.ForeignKey(e => e.EquipmentTypeId, (System.Collections.IEnumerable)Business.EquipmentTypeModel.All(), "EquipmentTypeId", "EquipmentTypeName");
        columns.Command(command => { command.Edit(); command.Destroy(); }).Width(200);
    })
    .ToolBar(toolbar => toolbar.Create())
    .Editable(editable => editable.Mode(GridEditMode.InLine))
    .Pageable()
    .Sortable()
    .Scrollable()
    .Filterable()
    .ColumnMenu()
    .DataSource(dataSource => dataSource
        .Ajax()
        .ServerOperation(false)
        .Model(model =>
        {
            model.Id(e => e.EquipmentId);
            model.Field(e => e.EquipmentId).Editable(false);
        })
        .Create(update => update.Action("Equipment_Create", "Equipment"))
        .Update(update => update.Action("Equipment_Update", "Equipment"))
        .Destroy(update => update.Action("Equipment_Destroy", "Equipment"))
    )
)
Controller
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Equipment_Create([DataSourceRequest] DataSourceRequest request, EquipmentModel entity)
{
    if (entity != null && ModelState.IsValid)
    {
        entity.Add();
    }
 
    return Json(new[] { entity }.ToDataSourceResult(request, ModelState));
}
Model/Business Object
public class EquipmentModel
{
    public int EquipmentId { get; set; }
    public string Description { get; set; }
    public string Make { get; set; }
    public string Model { get; set; }
    public int EquipmentTypeId { get; set; }
}
Add Function
public int Add()
{
    using (Entities ctx = new Entities())
    {
        Equipment equipment = new Equipment()
        {
            EquipmentId = this.EquipmentId,
            Description = this.Description,
            Make = this.Make,
            Model = this.Model,
            EquipmentTypeId = this.EquipmentTypeId
        };
 
        ctx.Equipment.AddObject(equipment);
 
        ctx.SaveChanges();
 
        return (this.EquipmentId = equipment.EquipmentId);
    }
}
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Evan
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answered on 15 Nov 2012, 05:03 PM

Take a look at what your browser is posting.  I'm not sure if you need to change to this or not, but you might try it similar to this(with an IEnumerable and binding prefix)  I think the examples are more reliable than the Getting Started documentation.  I got this one from EditingController.cs.

public
ActionResult CreateDetail([DataSourceRequest] DataSourceRequest request, [Bind(Prefix = "models")]IEnumerable<TradeEntryDetailModel> details)




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Brendon
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answered on 15 Nov 2012, 07:03 PM
Thanks Evan, but it appears this is the real issue I am having with the second part. I believe you ran into the same thing:

http://www.kendoui.com/forums/mvc/grid/in-an-editable-grid-picking-the-first-value-in-a-foreignkey-column-shows-a-blank-cell.aspx
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