public ActionResult Add(AddSettingsVM model)
        {
            using (TruckTransportDbContext _db = new TruckTransportDbContext())
            {
                if (_db.postavke.AsNoTracking().Where(x => x.kljuc == model.KeyName).FirstOrDefault() != null)
                {
                    ModelState.AddModelError("", "Naziv postavke već postoji!");
                }

                if (ModelState.IsValid)
                {
                    postavke newSettingDB = new postavke {
                        kljuc      = model.KeyName,
                        vrijednost = model.Value
                    };

                    _db.postavke.Add(newSettingDB);
                    _db.SaveChanges();

                    return(Json(data: new { success = true }));
                }
            }

            return(PartialView(viewName: "_Add", model: model));
        }
        public ActionResult Add()
        {
            AddSettingsVM model = new AddSettingsVM();

            return(PartialView(viewName: "_Add", model: model));
        }