OptGroup in kendo ui combobox

Question

How to implement the groupings of item in kendo ui combobox with angular implementation. I tried

k-template but it is not working

<select kendo-combo-box
    k-placeholder="'Select frequency'"
    k-data-text-field="'Name'"
    k-data-value-field="'PaymentModeID'"
    k-filter="contains"
    k-auto-bind="false"
    k-template="freqTemplate"
    k-min-length="3"
    k-data-source="dsPaymentModes"
    style="width: 100%"></select>

When I searched I found that the telerik team didn't implement this functionality yet. Anybody have any alternative solution?

BTW I am using Kendo UI v2014.2.1008 and I prepared a fiddle to play with. Please click here

Answer 1

demo kendo

Kendo UI v2015.2.805

new feature : grouping in combobox and dropdownlist.