Convenient object coding via ObjectMapper - Example

ObjectMapper-Coding.swift

class Base: NSObject, NSCoding, StaticMappable {
    
    var d: Int?
    
    override init() {}
    
    init(d: Int?) {
        self.d = d
    }
    
    //MARK: NSCoding
    
    required init?(coder aDecoder: NSCoder) {
        guard let json = aDecoder.decodeObject(forKey: "key") as? [String : Any] else {
            return nil
        }
        super.init()
        let map = Map(mappingType: .fromJSON, JSON: json)
        mapping(map: map)
    }

    func encode(with aCoder: NSCoder) {
        aCoder.encode(toJSON(), forKey: "key")
    }
    
    //MARK: StaticMappable

    static func objectForMapping(map: ObjectMapper.Map) -> BaseMappable? {
        return nil
    }
    
    func mapping(map: Map) {
        d <- map["d"]
    }
}

final class A: Base {

    var a: Int!
    var b: Int!
    
    init(a: Int, b: Int, d: Int?) {
        super.init(d: d)
        self.a = a
        self.b = b
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    override func mapping(map: Map) {
        super.mapping(map: map)
        a <- map["a"]
        b <- map["b"]
    }
}