AlamofireObjectMapper Resulting in nil - ios

Question

So I'm working with a weather API:
https://api.darksky.net/forecast/88d117d813f2014a1ce7f3de6a00c720/50.909698,-1.404351
The thing I want to achieve is getting all the precipIntensity from each minute into an array. This way I can make a graph where the Y is the precipIntensity and the X is array.count (which would count up to 61 with this API).
So this is my code in the ViewController:
func downloadWeatherDetails(completed: DownloadComplete) {
// Alamofire Download
let currentWeatherURL = URL(string: WeatherURL)!
Alamofire.request(currentWeatherURL).responseObject { (response: DataResponse<WeatherResponse>) in
let Forecast = response.result.value
if let minutelyForecast = Forecast?.minutelyForecast {
for forecast in minutelyForecast {
print(forecast.time)
print(forecast.precipIntensity)
}
}
}
}
And my Class file is as follows:
class WeatherResponse: Mappable {
var summary: String!
var minutelyForecast: [Forecast]?
required init?(map: Map) {
}
func mapping(map: Map) {
summary <- map["minutely.summary"]
minutelyForecast <- map["minutely.data"]
}
}
class Forecast: Mappable {
var time: String!
var precipIntensity: String!
required init?(map: Map) {
}
func mapping(map: Map) {
time <- map["time"]
precipIntensity <- map["precipIntensity"]
}
}
However the print(forecast.precipIntensity) prints out nil, 61 times.
How do I get this info?
And how can I put it into an array to make it into a graph and continue with my work?
Thanks in advance.

Answer 1

The problem with your code was that time and precipIntensity aren't String values, but numbers.
class Forecast: Mappable {
var time: Int!
var precipIntensity: Double!
...
}
Extracting precipitation data :
func downloadWeatherDetails(completed: DownloadComplete) {
// Alamofire Download
let currentWeatherURL = URL(string: WeatherURL)!
Alamofire.request(currentWeatherURL).responseObject { (response: DataResponse<WeatherResponse>) in
let Forecast = response.result.value
if let minutelyForecast = Forecast?.minutelyForecast {
// Data is already sorted from the API
// but you could be sure nothing happened while decoding
// by using `sorted()`
let minutelyPrecipIntensity = minutelyForecast
.sorted { $0.time < $1.time }
.flatMap { $0.precipIntensity }
}
}
}
Edit: Removed Codable answer