How to connect to new viewController with data saved in struct model of other viewController - swift

Question

How can I get the data that in Struct model in new viewController
I got a viewController when i print the var in Struct model it appeare just fine.
I created New viewController trying to get the same data in otherview of that struct model but when i print it it give me nil
I tryied to make the model equal to the new model in the new viewController
MessageController View
var messages = [Message]()
var users = [Contact]()
var messagesDicionary = [String: Message]()
var testMSG : Message?
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let message = self.messages[indexPath.row]
let chatPartnerId = message.chatPartnerId()
let ref = Database.database().reference().child("users").child(chatPartnerId)
ref.observe(.value) { (snap) in
if let dictinoary = snap.value as? [String: AnyObject] {
guard let email = dictinoary["email"] ,let profileimage = dictinoary["profileimage"], let userid = dictinoary["userid"], let username = dictinoary["username"] else {
return
}
var user = Contact()
user.userid = chatPartnerId
user.userid = chatPartnerId
let userValue = Contact.init(email: email as? String, username: username as? String, profileimage: profileimage as? String, userid: userid as? String)
self.users.append(userValue)
self.showChatControllerToUser(user: userValue)
print(message.receivername)
}
}
}
result of Print Optional("Omar")
ChatMessagesController View
var user :Contact?
var users = [Contact]()
var message: Message?
var messagesArray = [Message]()
func observeChatMessages() {
guard let uid = Auth.auth().currentUser?.uid else {
return
}
let userMessagesRef = Database.database().reference().child("usersmesssages").child(uid)
userMessagesRef.observe(.childAdded) { (snap) in
let messageId = snap.key
let messageRef = Database.database().reference().child("messages").child(messageId)
messageRef.observeSingleEvent(of: .value, with: { (snapshot) in
guard let dictionary = snapshot.value as? [String:AnyObject] else {
return
}
let text = dictionary["text"] as? String
let receiverid = dictionary["receiverid"] as? String
let senderid = dictionary["senderid"] as? String
let time = dictionary["timestamp"] as? TimeInterval
let senderName = dictionary["sendername"] as? String
let receiverName = dictionary["receivername"] as? String
self.messagesArray.append(MessageValue)
self.chatTableView.reloadData()
print(self.message?.receivername)
})
}
}
result of print NIL
Message Model
struct Message {
var text: String?
var receiverid: String?
var senderid: String?
var timestamp: TimeInterval?
var sendername: String?
var receivername: String?
func chatPartnerId() -> String {
return (senderid == Auth.auth().currentUser?.uid ? receiverid : senderid)!
}
}
I tried to make in MessagesController
let chatMessage = ChatMessageController()
chatMessage.message = self.testMSG