swift - 创建新用户帐户后将用户数据写入 Firebase

Question

我目前正尝试在使用创建用户函数 FIRAuth.auth()?.createUser 后将用户信息写入 firebase 的数据库

在此函数下，我尝试像这样将数据插入数据库:

    FIRAuth.auth()?.createUser(withEmail: self.emailField.text!, password: self.passwordField.text!) { (user, error) in

                if error == nil

                {   
                    let email = self.emailField.text
                    let firstName = self.firstnameField.text
                    let lastName = self.lastnameField.text      


                    self.ref.child((user?.uid)!).setValue(["firstName": firstName,"lastName": lastName,"email": email])               
                    self.performSegue(withIdentifier: "createaccountLandingPage", sender: sender)
                }

同样重要的是，在我的 View Controller 下，我使用以下方法创建了对数据库的引用:

var ref = FIRDatabase.database().reference().child("users")//根数据库

我的网点都是正确的，但我得到这个错误:

Thread 1: signal SIGABRT

对我可能做错的事情有什么建议吗？

编辑** 这是我在注册 View Controller 中的所有代码

import UIKit
import Firebase
import FirebaseDatabase

class CreateAccountViewController: UIViewController {

    var ref = FIRDatabase.database().reference().child("users") //root database

@IBOutlet weak var firstnameField: UITextField!
@IBOutlet weak var lastnameField: UITextField!
@IBOutlet weak var emailField: UITextField!
@IBOutlet weak var passwordField: UITextField!
@IBOutlet weak var confirmpasswordField: UITextField!
@IBOutlet weak var createAccountButton: UIButton!


override func viewDidLoad() {

    super.viewDidLoad()

    if (FIRAuth.auth()?.currentUser) != nil
    {

    }
    else
    {

    }

    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

    // Dispose of any resources that can be recreated.

}

@IBAction func createAccountAction(_ sender: AnyObject)

{

    if self.confirmpasswordField.text != self.passwordField.text

    {

    }

    else

    {
        FIRAuth.auth()?.createUser(withEmail: self.emailField.text!, password: self.passwordField.text!) { (user, error) in

            if error == nil

            {

                let user = FIRAuth.auth()?.currentUser.uid
                let email = self.emailField.text
                let firstName = self.firstnameField.text
                let lastName = self.lastnameField.text

                self.ref.child("users").child("\(user)").setValue(["firstName": firstName,"lastName": lastName,"email": email])


                self.performSegue(withIdentifier: "createaccountLandingPage", sender: sender)

            }

            else

            {
                let alertController = UIAlertController(title: "Oops!", message: error?.localizedDescription, preferredStyle: .alert)

                let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
                alertController.addAction(defaultAction)

                self.present(alertController, animated: true, completion: nil)

            }
        }
    }
}

EDIT*** 这是错误的截图

编辑**** 这是我的 podfile 的屏幕截图，更新后我在终端中没有收到任何错误。

编辑*****控制台截图。

1stScreenshotConsole 2ndScreenshotConsole

Answer 1

您必须像这样创建对数据库的引用

Var ref: FIRDatabaseReference!

然后像这样在 viewDidLoad 中初始化数据库

Ref = FIRDatabase.database().reference()

我在下面写了整个代码，请原谅语法错误，因为我是在 iPad 上回答你的问题。

import UIKit
import Firebase
import FirebaseDatabase

class CreateAccountViewController: UIViewController {

    var ref = FIRDatabaseReference! //create a reference for your database


@IBOutlet weak var firstnameField: UITextField!
@IBOutlet weak var lastnameField: UITextField!
@IBOutlet weak var emailField: UITextField!
@IBOutlet weak var passwordField: UITextField!
@IBOutlet weak var confirmpasswordField: UITextField!
@IBOutlet weak var createAccountButton: UIButton!


override func viewDidLoad() {

    super.viewDidLoad()

//initialize your database
ref = FIRDatabase.database().reference()
      // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

    // Dispose of any resources that can be recreated.

}

@IBAction func createAccountAction(_ sender: AnyObject)

{

    if self.confirmpasswordField.text != self.passwordField.text

    {

    }

    else

    {
        FIRAuth.auth()?.createUser(withEmail: self.emailField.text!, password: self.passwordField.text!) { (user, error) in

            if error == nil

            {
                let user = FIRAuth.auth()?.currentUser.uid //get the users UID after registering
                let email = self.emailField.text
                let firstName = self.firstnameField.text
                let lastName = self.lastnameField.text

                self.ref.child("users").child("\(user!)").setValue(["firstName": "\(firstName!)", "lastName": "\(lastName!)", "email": "\(email!)"])

                self.performSegue(withIdentifier: "createaccountLandingPage", sender: sender)

            }

            else

            {
                let alertController = UIAlertController(title: "Oops!", message: error?.localizedDescription, preferredStyle: .alert)

                let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
                alertController.addAction(defaultAction)

                self.present(alertController, animated: true, completion: nil)

            }
        }
    }
}