swift - 如何使用 swift 4 在 ios firebase 中存储用户数据

Question

@IBAction func usernameContinueBtnPressed(_ sender: Any) {

    if let email = emailFieldSignUp.text, let password = passwordFieldSignUp.text {

        Auth.auth().createUser(withEmail: email, password: password) { (user, error) in
            if let error = error {
                print(error.localizedDescription)
            }
            else{
                let userData = ["firstName": self.firstNameSignUpField.text! as String ,
                                "lastName": self.lastNameSignUpField.text! as String,
                                "username": self.usernameSignUpField.text! as String
                                ]
                let ref = Database.database().reference()
                ref.child("users").setValue(userData)

                print("Sign Up Successfully.")
                self.presentFeedPage()
            }
        }
    }
}

您好，我是 xcode 的新手。我想知道如何修复此代码，以便当用户使用电子邮件注册时，他们可以将他们的名字、姓氏和用户名存储在 firebase 数据库中。

Answer 1

要保存用户数据，需要先初始化数据库。您在 viewDidLoad()

中这样做

首先，将其添加到您的 viewDidLoad() 函数中:

var ref: DatabaseReference!

override func viewDidLoad() {
    super.viewDidLoad()
    ref = Database.database().reference()

   // ... //
}

之后，要将用户存储在自己的记录ID中，需要指定:

self.ref.child("users").child(user.uid).setValue(userData)

或者:

@IBAction func usernameContinueBtnPressed(_ sender: Any) {

if let email = emailFieldSignUp.text, let password = passwordFieldSignUp.text {

    Auth.auth().createUser(withEmail: email, password: password) { (user, error) in
        if let error = error {
            print(error.localizedDescription)
        }
        else{
            let userData = ["firstName": self.firstNameSignUpField.text! as String ,
                            "lastName": self.lastNameSignUpField.text! as String,
                            "username": self.usernameSignUpField.text! as String
                            ]


            self.ref.child("users").child(user.uid).setValue(userData)
            print("Sign Up Successfully.")
            self.presentFeedPage()
        }
    }
}

我还建议您引用他们的文档，我喜欢 firebase 有两点，速度和他们的文档。

Read and Write Data on iOS