Trying to get data from Firebase realtime-database - swift

Question

I'm trying to get data from a realtine-database I have in Firebase.
I saw a few answers here but couldn't find a solution that I understood and worked for me.
this is my code:
func ReadTeamPlayers(teamName name: String, completion: #escaping ([Player]?) -> Void) {
var playersArray = [Player]()
ref.child(name).observeSingleEvent(of: .value) { (snapshot) in
if let postDict = snapshot.value as? Dictionary<String, Any>{
for dict in postDict {
playersArray.append(Player(name: dict[snapshot.key] as! String, rank: dict[snapshot.value]))
}
}
}
}
In the player initializer I need to get the player's name and rank.
My Firebase looks like that:
TEAM1
---player1: 10
---player2: 5
---player3: 6
playerX is the player's name for now and the number is the player's rank.
How can I get the info for each player and use it later?
I tried few things but none worked for me.
Edit: I changed the code above to my current one, and this is the error I get now:
Value of tuple type '(key: String, value: Any)' has no member 'subscript'

Answer 1

You need
dic.forEach {
let player = Player(playerName:$0.key, playerRank:$0.value)
arr.append(player)
}
OR
let arr = dic.map { Player(playerName:$0.key, playerRank:$0.value) }
Change response
func ReadTeamPlayers(teamName name: String, completion: #escaping ([Player]?) -> Void) {
func ReadTeamPlayers(teamName name: String, completion: #escaping ([Player]?) -> Void) {
ref.child(name).observeSingleEvent(of: .value) { (snapshot) in
if let mPlayer = snapshot.value as? [String:Int] {
var arr = [Player]()
mPlayer.forEach {
let player = Player(playerName:$0.key, playerRank:$0.value)
arr.append(player)
}
completion(arr)
}else{
completion(nil)
}
}
}

Answer 2

Try this, you are using strange code with generics. Keep it simple
func ReadTeamPlayers(teamName name: String, completion: #escaping ([Player]?) -> Void) {
var playersArray = [Player]()
ref.child(name).observeSingleEvent(of: .value) { (snapshot) in
guard let dictionary = snapshot.value as? [String: Any] else {
print("empty snapshot")
return
}
for dict in dictionary {
print("playerName = \(dict.key)")
if let playerRank = dict.value as? Int {
print("playerRank = \(playerRank)")
let player = Player(name: dict.key, rank: playerRank)
playersArray.append(player)
}
}
}
}