laravel model eloquent

        $city = $this->hasOne(City::class, 'id', 'city_id');
        $district = $this->hasOne(District::class, 'id', 'district_id');
        $state = $this->hasOne(State::class, 'id', 'state_id');
        $neighborhood = $this->hasOne(Neighborhood::class, 'id', 'neighborhood_id');
        
        $data = new \StdClass();
        $data->city = $city;
        $data->district = $district;
        $data->state = $state;
        $data->neighborhood = $neighborhood;
        
        return $data;