This is the objectmapper I'm using:
ObjectMapper / AlamoFireObjctMapper
Here is the JSON data I'm working with, I'm trying to access the "link" value:
channels = (
{
social = {
facebook = {
"facebook_id" = 47360808996;
link = "https://www.facebook.com/CBS";
};
twitter = {
link = "https://twitter.com/CBS";
"twitter_id" = 97739866;
}
}
}
)
I've created custom objects to represent each level of the JSON dictionary:
class SocialInfo: Mappable {
var channels: Social?
required init?(map: Map) {
}
func mapping(map: Map) {
channels <- map["channels"]
}
}
class Social: Mappable {
var facebookSocial: Facebook?
var twitterSocial: Twitter?
required init?(map: Map) {
}
func mapping(map: Map) {
facebookSocial <- map["facebook"]
twitterSocial <- map["twitter"]
}
}
class Facebook: Mappable {
var facebookLink: NSURL?
required init?(map: Map) {
}
func mapping(map: Map) {
facebookLink <- (map["link"], URLTransform())
}
}
Initialy I had the "facebookLink" under the "Facebook" class as a string but it kept returing nil. I then tried the URLTransform to change it to a type of NSURL but now it's throwing the error:
Type of expression is ambiguous without more context
Here is how I'm trying to retrieve the JSON data:
func getSocialInfo (completionHandler: @escaping (SocialInfo?, Error?) -> ()){
Alamofire.request("\(baseURL)/\(apiKey)/show/950", method: .get, encoding: JSONEncoding.default).validate ()
.responseObject{ (response: DataResponse<SocialInfo>) in
switch response.result {
case .success:
let socialInfo = response.result.value
print("This is the social info: \(socialInfo?.channels?.facebookSocial?.facebookLink)")
completionHandler(socialInfo!, nil)
case .failure(let error):
print("Sorry there was an error: \(error)")
completionHandler(nil,error)
return
}
}
}
Try setting the link as a string
var stringURL:String?
Getting the link
stringURL <- map["link"]
Convert the stringURL to URL
if let url = URL(string: stringURL) {
// do something
}
Also, note that this will not work, as you are particularly saying that the facebookDictionary is = to your Facebook object.
class Social: Mappable {
var facebookSocial: Facebook?
var twitterSocial: Twitter?
fileprivate var facebookDictionary:[AnyHashable:Any]?
fileprivate var twitterDictionary:[AnyHashable:Any]?
required init?(map: Map) {
}
func mapping(map: Map) {
facebookDictionary <- map["facebook"]
twitterDictionary <- map["twitter"]
if let _facebookDictionary = facebookDictionary,
let _twitterDictionary = wittertDictionary {
let twitterMap = Map(mappingType: .fromJSON, JSON: _twitterDictionary)
let facebookMap = Map(mappingType: .fromJSON, JSON: _facebookDictionary)
/// Here you can initiate both object using map.
facebookSocial = Facebook(map: facebookMap)
twitterSocial = Twitter(map: twitterMap)
/// If you want to use mapping function, set this as:
facebookSocial = Facebook()
twitterSocial.mapping(map: twitterMap)
facebookSocial = Facebook()
twitterSocial.mapping(map: twitterMap)
}
}
}
As you did not create a new map using the social dictionary, both objects will always be nil
Same for Social, first create a map out of Social dictionary.