Database.database().reference().child("users").child(currentUser!).child("messages").observe(.value, with: { (snapshot) in

        if let snapshot = snapshot.children.allObjects as? [DataSnapshot] {

            self.messageDetail.removeAll()

            for data in snapshot {

                if let messageDict = data.value as? Dictionary<String, AnyObject> {

                    let key = data.key

                    let info = MessageDetail(messageKey: key, messageData: messageDict)

                    self.messageDetail.append(info)
                }
            }
        }