Error: keyNotFound(CodingKeys(stringValue: "origin", intValue: nil), - ios

Question

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I am building a small swift dog fetch app using the DogsApi and I am running into some issues trying to parse the JSON. I have used the following function to parse the get and parse the JSON.
Below is my viewController:**
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
var dogs = [DogStats]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
downloadJson {
print("Successful")
}
}
func downloadJson(completed: #escaping () -> ()) {
if let url = URL(string: "https://raw.githubusercontent.com/DevTides/DogsApi/master/dogs.json") {
URLSession.shared.dataTask(with: url) { data, response, error in
if let data = data {
do {
let dogs = try JSONDecoder().decode([DogStats].self, from: data)
print(dogs)
DispatchQueue.main.async {
self.dogs = dogs
self.tableView.reloadData()
}
} catch let error {
print(error)
}
}
}.resume()
}
}
}
below is my struct
import Foundation
struct DogStats: Codable {
let name: String
let origin: String
let breed_group: String!
let life_span: String
let temperament: String
}
Error in debugger
keyNotFound(CodingKeys(stringValue: "origin", intValue: nil), Swift.DecodingError.Context(codingPath: [_JSONKey(stringValue: "Index 5", intValue: 5)], debugDescription: "No value associated with key CodingKeys(stringValue: "origin", intValue: nil) ("origin").", underlyingError: nil))

Answer 1

origin, breed_group, temperament are not contained in all of your JSON objects in your API data. So there parse error occurred. You can make those optional(i.e. let origin: String?). You can also make all of your fields optional.
struct DogStats: Codable {
let name: String
let origin: String?
let breed_group: String?
let life_span: String
let temperament: String?
}