Swift Firebase Save/Update multiple parents with the same child values - ios

Question

I have an array of strings which is the "uid's" of users. I am trying to append data/children to these multiple "uid's". Adding children or updating children to individual parents/users is easy and I understand how to do it. The problem is that this array can either contain 1 uid or 50 uid's. Is it possible for me to take these uid's and then update them with the same value? I am unsure what code to provide since I am just trying everything to attack this.
With the code below, this is me send a message to other users.
Array of uid strings
var data = [String]()
Sample code of me sending a message to 2 users, just wanted to provide something here to show I know how to update/save data
private func sendMessageWithProperties(_ properties: [String: Any]) {
let businessRef = Database.database().reference().child("Business Group Chats Messages").child((group?.uid)!).child((Auth.auth().currentUser?.uid)!)
let ref = Database.database().reference().child("Business Group Chats Messages").child((Auth.auth().currentUser?.uid)!).child((group?.businessName)!)
let businesChildRef = businessRef.childByAutoId()
let childRef = ref.childByAutoId()
let fromID = Auth.auth().currentUser!.uid
let timeStamp = Int(Date().timeIntervalSince1970)
var value:[String: Any] = ["fromId" : fromID, "timeStamp" : timeStamp, "name": self.loggedInUserData?["name"] as? String]
properties.forEach { (k,v) in
value[k] = v
}
childRef.updateChildValues(value) { (err, ref) in
if err != nil {
print(err!)
return
}
Database.database().reference().child("Business Group Chats").child((self.group?.uid)!).child((Auth.auth().currentUser?.uid)!).updateChildValues(["last message" : childRef.key!, "timestamp" : timeStamp, "businessName":(self.group?.businessName)!])
Database.database().reference().child("Business Group Chats").child((Auth.auth().currentUser?.uid)!).child((self.group?.uid)!).updateChildValues(["last message" : childRef.key!, "timestamp" : timeStamp])
self.inputContainerView.inputTextField.text = nil
}
}

Answer 1

Here is me taking that array of "uid's" and then pulling and printing that I can access each "uid" through a array of strings. Allowing me to access, now I can append data to each.
Database.database().reference().child("Businesses").observe(.value, with: { snapshot in
if snapshot.exists() {
self.businessUID = snapshot.value as? NSDictionary
if let dict = snapshot.value as? NSDictionary {
for item in dict {
let json = JSON(item.value)
let businessUid = json["uid"].stringValue
for uid in self.data {
if uid == businessUid {
//print(uid)
self.businessessuids = uid
print(self.businessessuids)
Database.database().reference().child("Businesses").child(self.businessessuids).observe(.value, with: { snapshot in
print(snapshot)
print("Trying to pull data from multiple strings right here this shoudld work")
})
print("printing the values to match with the string UID's")
}
}
}
}
} else {
print("does not exist")
}
})