import 'package:geocoder/model.dart'; class CatalogMetadata { final int contentId, dateMillis; final String xmpSubjects; final double latitude, longitude; Address address; CatalogMetadata({this.contentId, this.dateMillis, this.xmpSubjects, double latitude, double longitude}) // Geocoder throws an IllegalArgumentException when a coordinate has a funky values like 1.7056881853375E7 : this.latitude = latitude == null || latitude < -90.0 || latitude > 90.0 ? null : latitude, this.longitude = longitude == null || longitude < -180.0 || longitude > 180.0 ? null : longitude; factory CatalogMetadata.fromMap(Map map) { return CatalogMetadata( contentId: map['contentId'], dateMillis: map['dateMillis'], xmpSubjects: map['xmpSubjects'], latitude: map['latitude'], longitude: map['longitude'], ); } Map toMap() => { 'contentId': contentId, 'dateMillis': dateMillis, 'xmpSubjects': xmpSubjects, 'latitude': latitude, 'longitude': longitude, }; @override String toString() { return 'CatalogMetadata{contentId=$contentId, dateMillis=$dateMillis, latitude=$latitude, longitude=$longitude, xmpSubjects=$xmpSubjects}'; } }