JSON Parsing swift, Always catch statement executing - json

Question

I have UITableViewController, i'm trying to parse data from url,
Always catch statement executing, that prints "something" in the console.
in Storyboard i added reuse identifier to the table view cell.
'''
class TableViewController: UITableViewController {
final let url = URL(string: "http://jsonplaceholder.typicode.com/posts")
private var posts = [Post]()
override func viewDidLoad() {
super.viewDidLoad()
downloadJson()
}
func downloadJson() {
guard let downloadURL = url else { return }
URLSession.shared.dataTask(with: downloadURL) { (data, response, error) in
guard let data = data, error == nil, response != nil else {
return
}
do {
let decoder = JSONDecoder()
let tempPosts = try decoder.decode(Posts.self, from: data)
print(tempPosts)
self.posts = tempPosts.posts
DispatchQueue.main.async {
self.tableView.reloadData()
}
} catch {
print("something")
}
}.resume()
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return posts.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = posts[indexPath.row].title
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
}
}
'''
'''
class Posts: Codable {
let posts: [Post]
init(posts: [Post]) {
self.posts = posts
}
}
class Post: Codable {
let userId: Int
let id: Int
let title: String
let body: String
init(userId: Int, id: Int, title: String, body: String) {
self.userId = userId
self.id = id
self.title = title
self.body = body
}
}
'''

Answer 1

If the Post model is,
struct Post: Codable {
let userId, id: Int
let title, body: String
}
Use [Posts].self instead of Posts.self while parsing the data.
let tempPosts = try decoder.decode([Post].self, from: data)