How to get the result value of Alamofire.request().responseJSON in swift 2?

Question

I have a question about the new version of Alamofire for Swift 2

Alamofire.request(.POST, urlString, parameters: parameters as? [String : AnyObject])
                


        

Answer 1

You can now achieve most of the required behaviour out of the box without the need for SwiftyJSON for example. My OAuthTokenResponse is a simple struct that is Codable. The Alamofire library 5.2.2 lets you respond using the 'responseDecodable'

If you have say a struct that looks like this:

struct OAuthTokenResponse : Codable
{
    var access_token:String?
    var token_type:String?
    var expires_in:Int?
    var scope:String?
}

And then in your network call (using Alamofire)

let request = AF.request(identityUrl, method: .post, parameters: parameters, encoding: URLEncoding.httpBody)
    request
        .validate()
        .responseDecodable { (response:AFDataResponse) in
            
            switch response.result {
            case .success(let data):
                do {
                    let jwt = try decode(jwt: data.access_token!) // example
                    self.connected = true
                    print(jwt)
                } catch {
                    print(error.localizedDescription)
                    self.connected = false
                }
                
            case .failure(let error):
                    self.connected = false
                    print(error.localizedDescription)
            }
        
        }

In the above code, the success case automatically deserialises your JSON using the decodable protocol into your struct. Any errors will result in the error case being hit instead.