If you have a problematic JSON, which can contain number or string for some keys, you can decode object without that property and manually set that property after decoding.
For example, I have a Vehicle class inside HistoryItem. In Vehicle model_year can be empty String or non empty Int. Here I am decoding modelYear manually using NSDictionary and trying to get Int. Swift 4 cannot do it automatically.
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do { // Decoding HistoryItem from JSON let jsonData = try JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted) let decoder = JSONDecoder() let historyItem = try decoder.decode(HistoryItem.self, from: jsonData) if let modelYear = (dict as NSDictionary).value(forKeyPath: "vehicle.model_year") as? Int { historyItem.vehicle?.modelYear = modelYear } // Saving HistoryItem to Realm let realm = try! Realm() try! realm.write { realm.add(historyItem, update: true) } } catch { print(error.localizedDescription) } |
This is my Vehicle class that is contained inside HistoryItem:
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class Vehicle: Object, Codable { @objc dynamic var VIN: String = "" @objc dynamic var make: String? @objc dynamic var modelName: String? @objc dynamic var recallCount: Int = 0 @objc dynamic var modelYear: Int = 0 override static func primaryKey() -> String? { return "VIN" } private enum CodingKeys: String, CodingKey { case VIN = "vin" case make case modelName = "model_name" case recallCount = "recall_count" } } |
As you see, there is no model_year key in CodingKeys.