public JsonResult AddRequest([FromBody] BadgeRequestViewModel vm)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    // translate ViewModel to entity type
                    var req = Mapper.Map <tb_request>(vm);
                    _repository.SaveRequest(req);
                    // valid request creation
                    Response.StatusCode = (int)HttpStatusCode.Created;

                    return(Json(Mapper.Map <BadgeRequestViewModel>(req)));
                }
            }
            catch (Exception ex)
            {
                Response.StatusCode = (int)HttpStatusCode.BadRequest;
                return(Json(ResultError.CreateFromException("Error adding new request", HttpStatusCode.BadRequest, ex)));
            }
            Response.StatusCode = (int)HttpStatusCode.BadRequest;
            return(Json(ResultError.CreateFromModelState(HttpStatusCode.BadRequest, ModelState)));
        }