public async Task <IHttpActionResult> DeleteAllByUserId(int userid)
        {
            var code = await RezervariDao.deleteReservationsByUserId(userid);

            if (code == 1)
            {
                return(Ok());
            }
            else if (code == 0)
            {
                return(NotFound());
            }
            else
            {
                return(Content(HttpStatusCode.InternalServerError, "Error occured"));
            }
        }