public IActionResult Edit(int?id)
        {
            if (id == null)
            {
                return(View("PageNotFound"));
            }
            var obukaIzBaze = service.FindById(id);

            if (obukaIzBaze == null)
            {
                return(View("PageNotFound"));
            }
            return(View(obukaIzBaze));
        }
        public ActionResult <Obuka> Delete(int id)
        {
            var obuka = _service.FindById(id);

            if (obuka == null)
            {
                return(NoContent());
            }
            _service.Delete(obuka.Id);
            return(NoContent());
        }