Alamofire 3->4 trouble with Reponse & ResponseSerializer Swift 3.0 - ios

Question

I'm having trouble with the ResponseSerializer I get an unresolved identifier and for Response I get an undeclared type. I've read from alamofire migration doc that Response has been changed to multiple types. So I should change Response->DataReponse but this means I can only pass one argument like:
// What I have
Response(<ListWrapper, NSError>)
// What I should change it to?
DataResponse(<ListWrapper>)
How can I still recieve the Error this way and more importantly how do I migrate the extension to alamofire 4?
My class:
class List{
var idNumber: String?
var title: String?
var posterPath: String?
var release: String?
required init(json: JSON, id: Int?)
{
self.idNumber = json[ListFields.Id.rawValue].stringValue
self.title = json[ListFields.Title.rawValue].stringValue
self.posterPath = json[ListFields.PosterPath.rawValue].stringValue
self.release = json[ListFields.Release.rawValue].stringValue
}
class func setURL_APPEND(_ url: String)
{
URL_APPEND = url
}
// MARK: Endpoints
class func endpointForList() -> String
{
return URL_APPEND
}
fileprivate class func getListAtPath(_ path: String, completionHandler: #escaping (ListWrapper?, NSError?) -> Void) {
Alamofire.request(path)
.responseListArray { response in
if let error = response.result.error
{
completionHandler(nil, error)
return
}
completionHandler(response.result.value, nil)
}
}
class func getList(_ completionHandler: #escaping (ListWrapper?, NSError?) -> Void)
{
getListAtPath(List.endpointForList(), completionHandler: completionHandler)
}
}
// Problem is here:
// for ResponseSerializer I get an unresolved identifier
// and for Response I get an undeclared type
extension Alamofire.Request {
func responseListArray(_ completionHandler: #escaping (Response<ListWrapper, NSError>) -> Void) -> Self {
let responseSerializer = ResponseSerializer<ListWrapper, NSError> { request, response, data, error in
guard error == nil else
{
return .failure(error!)
}
guard let responseData = data else {
let failureReason = "Array could not be serialized because input data was nil."
let error = Alamofire.Error.errorWithCode(.dataSerializationFailed, failureReason: failureReason)
return .failure(error)
}
let JSONResponseSerializer = Request.JSONResponseSerializer(options: .allowFragments)
let result = JSONResponseSerializer.serializeResponse(request, response, responseData, error)
switch result {
case .success(let value):
let json = SwiftyJSON3.JSON(value)
let wrapper = ListWrapper()
var allList:Array = Array<List>()
wrapper.totalCount = json["favorite_count"].intValue
// print(json)
let results = json["items"]
// print(results)
for jsonList in results
{
//print(jsonList.1)
let list = List(json: jsonList.1, id: Int(jsonList.0) )
if (list.posterPath == "")
{
continue
}
else
{
//print(movies.posterPath)
allList.append(list)
}
}
wrapper.results = allList
return .success(wrapper)
case .failure(let error):
return .failure(error)
}
}
return response(responseSerializer: responseSerializer,completionHandler: completionHandler)
}
}

Answer 1

Bro try below code see:
func responseListArray(_ completionHandler: #escaping (Response<ListWrapper>) -> Void) -> Self {
let responseSerializer = ResponseSerializer<ListWrapper> { request, response, data, error in
guard error == nil else
{
return .failure(error!)
}
guard let responseData = data else {
return .failure(AFError.responseSerializationFailed(reason: .inputDataNil))
}
let JSONResponseSerializer = Request.JSONResponseSerializer(options: .allowFragments)
let result = JSONResponseSerializer.serializeResponse(request, response, responseData, error)
switch result {
case .success(let value):
let json = SwiftyJSON3.JSON(value)
let wrapper = ListWrapper()
var allList:Array = Array<List>()
wrapper.totalCount = json["favorite_count"].intValue
// print(json)
let results = json["items"]
// print(results)
for jsonList in results
{
//print(jsonList.1)
let list = List(json: jsonList.1, id: Int(jsonList.0) )
if (list.posterPath == "")
{
continue
}
else
{
//print(movies.posterPath)
allList.append(list)
}
}
wrapper.results = allList
return .success(wrapper)
case .failure(let error):
return .failure(error)
}
}
return response(responseSerializer: responseSerializer,completionHandler: completionHandler)
}