simple way to map a json collection response into swift object class

Question

Ive tried a lot of libraries, Alamofire, JsonHelper, ObjectMapper etc..., but unfortunately, Ive coundn't map a json collection response into an object class. Im developing an IOS 8 App with swift 1.2 and xcode 6.3, and two classes of my model are:

Club.swift

class Club { 

    var id: String = ""
    var name: String = ""
    var imageUrl: String = ""
    var hasVip: Bool = false
    var desc: String = ""
    var location: [Location] = []

}

Location.swift

class Location {

    var country: String = ""
    var city: String = ""
    var address: String = ""
    var zip: String = ""
    var underground: [String] = []

}

I have another class to request to my API:

apliClient.swift

class ApiClient {

    var clubs = [Club]?()


    func getList(completionHandler: ([JSON]) -> ()) {
        let URL = NSURL(string: "https://api.com/v1/clubs")
        let mutableURLRequest = NSMutableURLRequest(URL: URL!)

        mutableURLRequest.setValue("Content-Type", forHTTPHeaderField: "application/json")
        mutableURLRequest.HTTPMethod = "GET"
        mutableURLRequest.setValue("Bearer R01.iNsG3xjv/r1LDkhkGOANPv53xqUFDkPM0en5LIDxx875fBjdUZLn1jtUlKVJqVjsNwDe1Oqu2WuzjpaYbiWWhw==", forHTTPHeaderField: "Authorization")

        let manager = Alamofire.Manager.sharedInstance
        let request = manager.request(mutableURLRequest)

        request.responseJSON { (request, response, json , error) in
            if (json != nil){
                var jsonObj = JSON(json!)
                if let data = jsonObj["hits"].arrayValue as [JSON]?{
                    completionHandler(data)
                }
            }
        }
    }
}

and I think, there is a simple way to mapping objects in swift. I would like to know, how I can return the completionHandler(data) converted into a [Club] object?

let data = jsonObj["hits"].arrayValue as [JSON]? is

[{
  "_id" : "5470def9e0c0be27780121d7",
  "imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/5470def9e0c0be27780121d7_180.png",
  "name" : "Mondo",
  "hasVip" : false,
  "location" : {
    "city" : "Madrid"
  }
}, {
  "_id" : "540b2ff281b30f3504a1c72f",
  "imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540b2ff281b30f3504a1c72f_180.png",
  "name" : "Teatro Kapital",
  "hasVippler" : false,
  "location" : {
    "address" : "Atocha, 125",
    "city" : "Madrid"
  }
}, {
  "_id" : "540cd44581b30f3504a1c73b",
  "imageUrl" : "https:\/\/s3-eu-west-1.amazonaws.com\/api-static\/clubs\/540cd44581b30f3504a1c73b_180.png",
  "name" : "Charada",
  "hasVippler" : false,
  "location" : {
    "address" : "La Bola, 13",
    "city" : "Madrid"
  }
}]

create an init in Club that takes a JSON object and then loop through the array elements and make a Club object out of each element, append that element to an array and pass that array through the completion block. — ad121

tristan_him tristan_him · Accepted Answer · 2015-05-03T18:01:44

You can do this with the ObjectMapper library that you mentioned above. Simply create the Club class and make sure it implements the Mappable protocol. Then you can use ObjectMapper as follows to map the data:

let clubs = Mapper<Club>().mapArray(JSONString)

Full disclosure: I am the author of ObjectMapper.

simple way to map a json collection response into swift object class

3 Answers