Swift 3 json parsing

Question

I am running into troubles updating my app as Alamofire and SwiftyJSON are not yet supporting Swift 3. I have a url that would return me json as follows:

{
          


        

Answer 1

To loop over all of the products you need to extract and cast it to the correct type. In this case an array of [String: Any].

I extracted the relevant bit of code and cleaned it up a bit to make this answer more readable.

guard let json = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String: Any],
    let products = json["products"] as? [[String: Any]]
    else { return }

for product in products {
    guard let id = product["id"] as? Int,
        let options = product["options"] as? [[String: Any]]
        else { return }

    print(id)
    print(options)
}

Answer 2

This parses the JSON, the root object is a dictionary, the objects for products and options are arrays. One value respectively is printed as an example.

if let jsonObject = try JSONSerialization.jsonObject(with:data, options: []) as? [String:Any] {
  print(jsonObject)
  if let products = jsonObject["products"] as? [[String:Any]] {
    for aProduct in products {
      print(aProduct["created_at"])
      if let options = aProduct["options"] as? [[String:Any]] {
        for option in options {
          print(option["product_id"])
        }
      }
    }
  }
}