Firebase Retrieving Data in Swift

Question

I\'m trying to retrieve specific data from just the currently logged in user. My data in my database looks like this:

Answer 1

Swift 4

let ref = Database.database().reference(withPath: "user")
    ref.observeSingleEvent(of: .value, with: { snapshot in

        if !snapshot.exists() { return }

        print(snapshot) // Its print all values including Snap (User)

        print(snapshot.value!)

        let username = snapshot.childSnapshot(forPath: "full_name").value
        print(username!)

    })