Swift, ObjectMapper: path for nested array - swift

Question

I have json from http://openweathermap.org/, and it looks like this:
{
"coord": {
"lon": 4.85,
"lat": 45.75
},
"weather": [
{
"id": 803,
"main": "Clouds",
"description": "broken clouds",
"icon": "04d"
}
],
"base": "cmc stations",
"main": {
"temp": 278.988,
"pressure": 985.88,
"humidity": 92,
"temp_min": 278.988,
"temp_max": 278.988,
"sea_level": 1032.68,
"grnd_level": 985.88
},
"wind": {
"speed": 1.8,
"deg": 355
},
"clouds": {
"all": 80
},
"dt": 1445249394,
"sys": {
"message": 0.0037,
"country": "FR",
"sunrise": 1445234548,
"sunset": 1445273273
},
"id": 2996944,
"name": "Lyon",
"cod": 200
}
I'm using Alamofire 3.0 for networking, ObjectMapper for mapping json to model, and AlamofireObjectMapper extension to get model objects from request instead of json.
Now I need to get weather description, but don't know how to write path for it. Tried ["weather.0.description"], ["weather.$0.description"], but these are not working, and my weather description is nil.
Here is my model:
class WCurrentWeather: Mappable {
var weatherDescription: String?
var tempriture: Double?
var clouds: Double?
var rain: Double?
var humidity: Double?
var pressure: Double?
var sunrise: NSDate?
var sunset: NSDate?
required init?(_ map: Map){
}
func mapping(map: Map) {
weatherDescription <- map["weather.0.description"]
tempriture <- map["main.temp"]
clouds <- map["clouds.all"]
rain <- map["rain.1h"]
humidity <- map["main.humidity"]
pressure <- map["main.pressure"]
sunrise <- (map["sys.sunrise"], DateTransform())
sunset <- (map["sys.sunset"], DateTransform())
}
}
and my request:
Alamofire.request(.GET, URL, parameters: params)
.responseObject { (response: WCurrentWeather?, error: ErrorType?) in
completionHandler(response, error)
}
Is there any way to get this working.
Thanks in advance.

Answer 1

I have forked ObjectMapper, and added this functionality, and thanks to Tristan Himmelman it is already merged, so now you can access to nested array elements like this map["weather.0.description"]

Answer 2

What you are looking for is:
let jsonDict = // You dict
jsonDict["weather"][0]["description"]
I am just giving you a direction. You would need to align it with Swift type casting rules. Good luck!