protected async override void OnAppearing()
        {
            base.OnAppearing();
            try
            {
                //vraca termine za trenutno ulogovanog kandidata
                var searchKandidat = new KandidatSearchRequest()
                {
                    KorisnikId = APIService.trenutniKorisnik.Id
                };
                //pretraga kandidata sa tim korisnickim nalogom
                var kandidat = await _kandidati.Get <List <MKandidat> >(searchKandidat);

                if (kandidat == null)
                {
                    throw new Exception("Ne postoje evidentirani termini!");
                }

                var search = new TerminRCSearchRequest()
                {
                    KandidatId = kandidat[0].Id
                };
                await model.PrikaziTermine(search);
            }
            catch (Exception ex)
            {
                await Application.Current.MainPage.DisplayAlert("Obavjestenje!", ex.Message, "OK");
            }
        }