Deserialize JSON / NSDictionary to Swift objects

Question

Is there a way to properly deserialize a JSON response to Swift objects resp. using DTOs as containers for fixed JSON APIs?

Something similar to http://james.newtonk

Answer 1

This way lets you get the user from a URL. It's parse the NSData to a NSDictionary and then to your NSObject.

let urlS = "http://api.localhost:3000/"

func getUser(username: Strung) -> User {
   var user = User()
   let url = NSURL(string: "\(urlS)\(username)")
   if let data = NSData(contentsOfURL: url!) {
     setKeysAndValues(user, dictionary: parseData(data))
   }
   return user
}

func setKeysAndValues (object : AnyObject, dictionary : NSDictionary)  -> AnyObject  {
    for (key, value) in dictionary {
        if let key = key  as? String, let value = value as? String {
            if (object.respondsToSelector(NSSelectorFromString(key))) {
                object.setValue(value, forKey: key)
            }
        }
    }
    return object
}

func parseData (data : NSData)  -> NSDictionary  {
    var error: NSError?
    return NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &error) as! NSDictionary
}