Nominatim (OpenStreet) city/city_district parsing of Place object

[VitaliyZaharenko]

When parsing a response from openstreetmap geocoder nominatim in a function
private func parseResultPlace(_ json: JSON) -> Place
the library is trying to access a fields "address" -> "city", "address" -> "city_district" that do not exist.

Example request URL:
https://nominatim.openstreetmap.org/reverse?format=json&lat=55.766403&lon=37.584307&addressdetails=1&limit=1

Example response JSON:

{
    "place_id": 198709562,
    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
    "osm_type": "relation",
    "osm_id": 3834185,
    "lat": "55.76649205",
    "lon": "37.5847426655174",
    "display_name": "Школа №1950, 28 с1, Зоологическая улица, Кудрино, Presnensky District, Central Administrative Okrug, Moscow, Central Federal District, 123056, Russia",
    "address": {
        "school": "Школа №1950",
        "house_number": "28 с1",
        "road": "Зоологическая улица",
        "suburb": "Presnensky District",
        "state_district": "Central Administrative Okrug",
        "state": "Moscow",
        "postcode": "123056",
        "country": "Russia",
        "country_code": "ru"
    },
    "boundingbox": [
        "55.7661513",
        "55.7668406",
        "37.5841336",
        "37.585355"
    ]
}

It seems we need to send an additional request with osm_id to get the city
Address lookup section in a link below:
https://wiki.openstreetmap.org/wiki/Nominatim

[malcommac]

I've tried to get lookup data from osm_id:

https://nominatim.openstreetmap.org/reverse?format=json&osm_type=R&osm_id=3834185&addressdetails=1&extratags=1

but I didn't get any extra data, in fact it's the same place in address:

{
    "place_id": 198709562,
    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
    "osm_type": "relation",
    "osm_id": 3834185,
    "lat": "55.76649205",
    "lon": "37.5847426655174",
    "display_name": "Школа №1950, 28 с1, Зоологическая улица, Кудрино, Presnensky District, Central Administrative Okrug, Moscow, Central Federal District, 123056, Russia",
    "address": {
        "school": "Школа №1950",
        "house_number": "28 с1",
        "road": "Зоологическая улица",
        "suburb": "Presnensky District",
        "state_district": "Central Administrative Okrug",
        "state": "Moscow",
        "postcode": "123056",
        "country": "Russia",
        "country_code": "ru"
    },
    "extratags": {},
    "boundingbox": [
        "55.7661513",
        "55.7668406",
        "37.5841336",
        "37.585355"
    ]
}

I've also tried with Rome:

https://nominatim.openstreetmap.org/reverse?format=json&lat=41.931725&lon=12.517384&addressdetails=1&limit=1

And the result contains the city data:

{
    "place_id": 198986782,
    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
    "osm_type": "relation",
    "osm_id": 5473366,
    "lat": "41.9279026",
    "lon": "12.5157982106648",
    "display_name": "Quartiere XVII Trieste, Via Acherusio, Municipio Roma II, Rome, RM, Lazio, 00199, Italy",
    "address": {
        "address29": "Quartiere XVII Trieste",
        "road": "Via Acherusio",
        "suburb": "Municipio Roma II",
        "city": "Rome",
        "county": "RM",
        "state": "Lazio",
        "postcode": "00199",
        "country": "Italy",
        "country_code": "it"
    },
    "boundingbox": [
        "41.9129308",
        "41.9428268",
        "12.4984614",
        "12.5266728"
    ]
}

I think it maybe a point with missing data.