Filtering with custom column

[Mike Davis]

I am using a server side grid and trying to filter on a custom property.  The code below shows a property named "Type."  This is property for a class.  I am using a display template for one of its properties and when I try to filter nothing shows in the drop down list.  If I try to filter I get an object reference is null error.

Html.Telerik().Grid(Model)

.Name(

 

"Grid")

 

 

.DataKeys(keys => keys.Add(c => c.MiniatureId))

.DataBinding(dataBinding => dataBinding.Server()

.Select(

 

"Index", "Miniature"))

 

 

.Pageable(pager => pager.PageSize(15))

.Sortable()

.Scrollable(scrollable => scrollable.Height(450))

.Groupable(group => group.Enabled(

 

true))

 

 

.Filterable()

.Columns(columns =>

{

columns.Template(c =>

{

%>

 

 

<a href="<%=Url.Action("Edit", "Miniature", new {id = c.MiniatureId})%>">Edit</a>

 

 

&nbsp;

 

<a href="<%=Url.Action("Details", "Miniature", new {id = c.MiniatureId})%>">View</a>

 

 

<%

}).Width(80);

columns.Bound(c => c.Type).Width(100);

 

 

 

columns.Bound(c => c.Name).Width(200);

 

}).Render();

[Atanas Korchev]

Hi Mike Davis,

Currently filtering is supported only for primitive types - numbers, dates, strings and enums. Unfortunately there is no way to perform filtering on custom type at the moment.

Regards,
Atanas Korchev
the Telerik team

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[Fabien VORILLION]

Hi,

I am very interested in this feature.
For exemple, to use it at the same as the RadGrid (by templates) : http://demos.telerik.com/aspnet-ajax/grid/examples/programming/filtertemplate/defaultcs.aspx
Do you plan to integrate it into your next update ?

Regards,
Fabien Vorillion

[Jann]

Any news on this?
What is the suggested work around? All ideas I've come up with so far are quite ugly since I also want to use editor templates... I think the way to go would be a feature that allows you to supply a lambda function that given the complex object returns a primitive type that will then be used for filtering.

[Jann]

How much work would it be to use the result of ToString() to do filtering and sorting on complex objects. Grouping already works like this. Unfortunately this approach will not work with Linq to SQL or Linq to Entities directly. It will work if you call ToList() on the resulting IQueryable...

Is it correct that this issue can not even be sovled by using custom binding?