public function persist()
    {

        $noviNalog = Zaposleni::insert([
            'username' => $this -> username,
            'password' => $this -> password,
            'jmbg' => $this -> jmbg,
            'ime' => $this -> ime,
            'prezime' => $this -> prezime,
            'created_at' => Carbon::now(),
            'updated_at' => Carbon::now(),
        ]);

        $user = new Zaposleni;
        $user->username=$this ->username;
        $user->password=Hash::make($this ->password);
        $user->ime=$this->name;
        $user->prezime=$this->prezime;
        $user->jmbg=$this->jmbg;

        $user->save();

        if($this->tip == 'Sluzbenik'){
            SalterskiSluzbenik::insert([
                'id' => $noviNalog->id,
                'created_at' => Carbon::now(),
                'updated_at' => Carbon::now(),
            ]);
        }
        if($this->tip == 'Menadzer'){
            Menadzer::insert([
                'id' => $noviNalog->id,
                'created_at' => Carbon::now(),
                'updated_at' => Carbon::now(),
            ]);
        }
        if($this->tip == 'Administrator'){
                Administrator::insert([
                'id' => $noviNalog->id,
                'created_at' => Carbon::now(),
                'updated_at' => Carbon::now(),
            ]);
        }

    }