public async Task <ActionResult> ContentsListForClassifier(string elementIdPrefix, [FromQuery(Name = "fieldID")] int fieldId)
{
var classifier = FieldService.Read(fieldId);
ViewBag.ElementIdPrefix = elementIdPrefix;
ViewBag.ContentElementID = string.Format("{0}_contentID", ViewBag.ElementIdPrefix);
ViewBag.IsNullCheckBoxElementID = string.Format("{0}_isNullCheckBox", ViewBag.ElementIdPrefix);
IEnumerable <QPSelectListItem> model = FieldService.GetAggregetableContentsForClassifier(classifier).Select(o => new QPSelectListItem {
Value = o.Value, Text = o.Text
}).ToList();
return(await JsonHtml("ContentsListForClassifier", model));
}