Error while registering a new user on Firebase - ios

Question

When I try to register a new user, I get an error saying value of type 'FIRDatabaseReference' has no member 'createuser'. See image below.
FIRAuth.auth()?.createUserWithEmail(<email: String>, password: <String>, completion: <FIRAuthResultCallback?(FIRUser?, NSError?) -> Void#>)
Here is a screenshot of how the code looks like picture of the code and the imageview:

Answer 1

Try this code it is working absolutely fine for me
//
// ViewController.swift
// FirebaseExample
//
// Created by Belal Khan on 03/10/16.
// Copyright © 2016 Belal Khan. All rights reserved.
//
import UIKit
//importing firebase
import Firebase
class ViewController: UIViewController {
//Textfields for email and password
#IBOutlet weak var textFieldEmail: UITextField!
#IBOutlet weak var textFieldPassword: UITextField!
//label for displaying message
#IBOutlet weak var labelMessage: UILabel!
//button for registration
#IBAction func buttonRegister(sender: UIButton) {
//do the registration operation here
//first take the email and password from the views
let email = textFieldEmail.text
let password = textFieldPassword.text
FIRAuth.auth()?.createUserWithEmail(email!, password: password!, completion: { (user: FIRUser?, error) in
if error == nil {
self.labelMessage.text = "You are successfully registered"
}else{
self.labelMessage.text = "Registration Failed.. Please Try Again"
}
})
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
//initialising firebase
FIRApp.configure()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Source: swift firebase tutorial

Answer 2

The code does not match. ref.createUser is different from FIRAuth.auth()?.createUserWithEmail

Answer 3

This is a working piece of code I tried a few days ago in XCode 7.3.1 I am not sure which version of XCode you are using. However, there's no pre-defined function as you tried!
func buttonHandleRegister() {
guard let email = emailTextField.text, password = passwordTextField.text, name = nameTextField.text else {
print("Form is not valid")
return
}
FIRAuth.auth()?.createUserWithEmail(email, password: password, completion: { (user: FIRUser?, error) in
if error != nil {
print("Error")
return
}
guard let uid = user?.uid else {
return
}
//successfully logged in
let ref = FIRDatabase.database().referenceFromURL("https://some-random-name.firebaseio.com/")
let usersReference = ref.child("users").child(uid)
let values = ["name" : name, "email": email, "password": password]
usersReference.updateChildValues(values, withCompletionBlock: { (err, ref)
in
if err != nil {
print(err)
return
}
print("Saved user succesfully")
})
})
}