mapping string response with ObjectMapper lib in swift

Question

I try to map a string response with object mapper by my result base.

this is result class :

import ObjectMapper

class Result< T : Mappable > : Mappable {

   var data: T?
   var status: String?
   var message: String?
   var error: String?

   init?(data: T?, status: String?, error: String?){
       self.data = data
       self.status = status
       self.error = error
   }

   required init?(map: Map){
   }

   func mapping(map: Map) {
       data    <- map["data"]
       status  <- map["status"]
       message <- map["message"]
       error   <- map["error"]
   }
}

and also this is my network class:

import Foundation
import ObjectMapper

final class Network<T:Mappable>{

init() {
}

open func requestItem(_ router: BaseRouter, completionHandler: @escaping (Any?, Error?) -> Void) {
    APIClient.Instance.requestJSON(router) { (response, error) in

        if let error = error {
            completionHandler(nil, APIError(code:ErrorCode.NetworkFailed, message:error.localizedDescription))
        }
        else if let json = response {

            var convertedString : String?

            do {
                let data1 =  try JSONSerialization.data(withJSONObject: json, options: JSONSerialization.WritingOptions.prettyPrinted)
                convertedString = String(data: data1, encoding: String.Encoding.utf8)
                print(convertedString!.description)

            } catch let myJSONError {
                print(myJSONError)
            }

            let result : Result<T>? = Mapper<Result<T>>().map(JSONString: convertedString!)

            if let success = result?.status, success == "success" {
                completionHandler(result?.data, nil)
            }
            else {
                completionHandler(nil, APIError(code:ErrorCode.HandledInternalError, message:(result?.error)!))
            }
        }
        else {
            completionHandler(nil, APIError(code:ErrorCode.EmptyJSONException, message:"Empty JSON Exception"))
        }
    }
  }
}

the response is :

{
   "status" : "success",
   "data" : "01CPSE6AQXVK554MTGENETKW24"
}

I try to map it but because of String is not a mappable class, I can not do. map["data"] variable should assign only string, not another complex class. Is there anyone can help me about this problem?

Finally error is :

Answer 1

Finally I can relies that what the wrong is with this code.

extension String : Mappable {

}

That's all.