JSONSerialization to SwiftyJSON - json

Question

I am trying to use SwiftyJSON with my JSON api data but am having trouble understanding how the conversion works.
Here is a link to the SwiftyJSON Git: https://github.com/SwiftyJSON/SwiftyJSON
Here is my current code:
func newFilms() {
let apiKey = "12345"
let url = URL(string: "https://api.themoviedb.org/3/movie/now_playing?api_key=\(apiKey)&language=en-US&page=1")
let request = URLRequest(
url: url! as URL,
cachePolicy: URLRequest.CachePolicy.reloadIgnoringLocalCacheData,
timeoutInterval: 10 )
let session = URLSession (
configuration: URLSessionConfiguration.default,
delegate: nil,
delegateQueue: OperationQueue.main
)
let task = session.dataTask(with: request, completionHandler: { (dataOrNil, response, error) in
if let data = dataOrNil {
if let resposeDictionary = try! JSONSerialization.jsonObject(with: data, options:[]) as? [String: Any] {
self.films = (resposeDictionary["results"] as? [String: Any])!
print("response: \(resposeDictionary)")
}
}
self.filteredFilms = self.films
self.filmsCollection.reloadData()
})
task.resume()
}
Here is the example of the new SwiftyJSON:
let json = JSON(data: dataFromNetworking)
if let userName = json[0]["user"]["name"].string {
print("\(userName)")
//Now you got your value
}
My main question is, what would go where it says data: datafromNetworking, I am confused what part of the original code should be implemented and how to use it for the new version.

Answer 1

dataFromNetworking represents the data object returned from the dataTask. SwiftyJSON does the deserialization.
Replace
if let data = dataOrNil {
if let resposeDictionary = try! JSONSerialization.jsonObject(with: data, options:[]) as? [String: Any] {
self.films = (resposeDictionary["results"] as? [String: Any])!
print("response: \(resposeDictionary)")
}
}
with
if let data = dataOrNil {
do {
let json = try JSON(data: data)
self.films = json["results"].dictionaryValue
} catch { print(error) }
}
However in Swift 4 SwiftyJSON became obsolete in favor to the powerful built-in Codable protocol