Swift, Firebase retrieving data from unknown child - ios

Question

I would like to retrieve data from Firebase database child. But I don’t know the child node name.
My database looks like this:
Users
UserID
2017 (I don't know this string. It's 2017, 2018... or something else?)
November (I don't know this string. It's November, January... or something else?)
Key: Value (I need this data)
Key: Value (I need this data)
Key: Value (I need this data)
I tried this:
override func viewDidLoad() {
super.viewDidLoad()
let userID = Firebase.Auth.auth().currentUser?.uid
databaseRef = Database.database().reference().child("Users").child(userID!)
databaseRef.observe(.value, with: { (snapshot) in
var newItems = [Post]()
for item in snapshot.children {
let newPost = Post(snapshot: item as! DataSnapshot)
newItems.append(newPost)
}
self.postArray = newItems
self.tableView.reloadData()
print(newItems)
}) { (error) in
print(error.localizedDescription)
}
}

Answer 1

In your current code you loop over the years already. If you also want to loop over the months, you'll need to add an extra for:
databaseRef = Database.database().reference().child("Users").child(userID!)
databaseRef.observe(.value, with: {(snapshot) in
for year in snapshot.children.allObjects as [DataSnapshot] {
for month in year.children.allObjects as [DataSnapshot] {
print(month.key)
}
}
}){
(error) in
print(error.localizedDescription)
}
This will print the months. You can get properties of the specific month with:
print(month.childSnapshot(forPath:"Key").value)