class Part{ String? id; String? code; String? name; int quantity; Part({ this.id, this.code, this.name, this.quantity = 1, }); factory Part.fromJson(Map parsedJson){ return Part( id: parsedJson["nid"] ?? parsedJson["id"], code: parsedJson["part_code"] ?? parsedJson["name"], name: parsedJson["part_name"], quantity: parsedJson["qty"] == null ? 1 : int.tryParse(parsedJson["qty"].toString()) ?? 1, ); } }