ForeignKey column not showing dropdown when column is edited

[Larry]

I have been pulling my hair out for the past two days on something that should be basic.    I have a grid using the ForeignKey to display a foreign key field.   When I open the screen all of the items with a existing foreign key assigned get interpreted correctly and show the Name column, not the key.   But, when I edit the column it shows the key with no combo.   Code snippets are in the attached file.

I am sure it is something simple, but I cannot figure it out.

Any help will be appreciated.

[Vladimir Iliev]

Hi Larry,

From the provided code it appears that the ForeignKeyColum is not using the default editor template - in this case you should make sure the project contains the defined "Resource_ItemEditor" view and it's nested under the "EditorTemplates" folder. For more information about the editor templates you can check the following help article:

• Grid: Editor templates

Kind Regards,
Vladimir Iliev
Telerik

 

 

[Larry]

I do have a custom editor called Resource_ItemEditor in the EditorTemplates folder.   Here is the Editor.

@model object

@(
 Html.Kendo().DropDownListFor(m => m)
            .DataTextField("Name")
            .DataValueField("Resource_Item_Key")
            .DataSource(d => d.Read(r => r.Action("GetDropDownList", "Resource_Item")))

)
@Html.ValidationMessageFor(m => m)

[Vladimir Iliev]

Hi Larry,

I tried to reproduce the problem locally but to no avail – everything is working as expected on our side. For convenience I created small project which replicates your scenario and works as expected on our side - could you please check it and let us know how it differs from your real setup? This would help us pinpoint the exact reason for this behavior.

Regards,
Vladimir Iliev
Telerik

 

 

[Tino]

Hi.

Vladimir, why in your sample project, dropdown is not displayed in popup mode?

Thx,

Tino.

[Vladimir Iliev]

Hi Tino,

In order to be shown in the "PopUp" editor of the Grid you should set the "UIHint" attribute over the model field:

public class Order
{
    [UIHint("Resource_ItemEditor")]
    public int EmployeeID { get; set; }

Regards,
Vladimir Iliev
Telerik

[Tino]

Thank you for your prompt reply.

Does this mean that we need always to put UIHit for default template also ?

 

Tino.

[Vladimir Iliev]

Hello Tino,

Yes - for the PopUp editor of the Grid you should set the "UIHint" attribute even for the ForeignKeyColumn as the editor is build by calling the "Html.EditorFor(action)" helper.

Regards,
Vladimir Iliev
Telerik