<input id={{concat 'sort-control-value-' elementId}} type="radio" value="Name" name={{concat 'sort-control-' name}} onchange={{action 'change'}} /> {{#if checked}} <input id={{concat 'sort-control-direction-' elementId}} type="checkbox" onchange={{action 'change'}} /> {{/if}} <label for={{if checked (concat 'sort-control-direction-' elementId) (concat 'sort-control-value-' elementId)}}> {{yield}} </label>