如何在Firebase上添加用户？

Question

我尝试通过此代码将用户添加到Firebase数据库。但是当我在我的应用程序上创建一个帐户时。没什么可推送到Firebase数据库的。请帮助我

导入UIKit 导入Firebase 导入FirebaseUI 进口FirebaseDatabase 导入FirebaseAuth

RegisterView类：UIViewController {

@IBOutlet weak var txtEmail: UITextField!
@IBOutlet weak var txtPass: UITextField!
@IBOutlet weak var txtPassConfirm: UIImageView!

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.
}
@IBAction func backBtn(_ sender: Any) {
    self.dismiss(animated: true, completion: nil)
}



@IBAction func createClick(_ sender: Any) {
    guard let email = txtEmail.text else {return}
    guard let pass = txtPass.text else {return}

    FireStoreManager().register(user: email, password: pass, complete: {(error, result) in
        if error != nil {
            print(error)
            return
        }
        var ref: DatabaseReference!
        ref = Database.database().reference(fromURL: "https://appchat-e2938.firebaseio.com/")

        let values = ["check": "0", "email": email, "password": pass, "uid" : "", "userName" : ""]
        ref.updateChildValues(values, withCompletionBlock: { (err, ref) in
            if err != nil {
                print(err)
                return
            } else {
                print("Saved user in Firebase Database")
            }
        })
    })


}