Question

你好，我是Swift / Firebase的新手，我正在努力合并两个数组，以便在名称和电子邮件字段中都可以看到downloadURL。一个功能通过单击按钮添加名称和电子邮件，另一个功能是保存URL。当我尝试和合并他们，我得到这个（如下图所示）。这是我的代码：

@IBAction func createAccountAction(_ sender: AnyObject) {

    let Users = Database.database().reference().child("Users")

    let userDictionary : NSDictionary = ["email" : emailTextField.text as String!, "Name": nameTextField.text!]

    Users.childByAutoId().setValue(userDictionary) {
        (error, ref) in

        if self.emailTextField.text == "" {
            let alertController = UIAlertController(title: "Error", message: "Please enter your email and password", preferredStyle: .alert)

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

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

        } else {
            Auth.auth().createUser(withEmail: self.emailTextField.text!, password: self.passwordTextField.text!) { (user, error) in

                if error == nil {
                    print("You have successfully signed up")
                    //Goes to the Setup page which lets the user take a photo for their profile picture and also chose a username

                    var imgData: NSData = NSData(data: UIImageJPEGRepresentation((self.profilePicture?.image)!, 0.8)!)
                    self.uploadProfileImageToFirebase(data: imgData)


                    let vc = self.storyboard?.instantiateViewController(withIdentifier: "ViewController") as! ViewController
                    self.present(vc, animated: true, completion: nil)

                } else {
                    let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .alert)

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

                    self.present(alertController, animated: true, completion: nil)
                }
            }
        }
    }
}
 func addImageURLToDatabase(uid:String, values:[String:AnyObject]){
    let Users = Database.database().reference().child("Users")
    let ref = Database.database().reference(fromURL: "https://example.firebaseio.com/")

    Users.updateChildValues(values) { (error, ref) in
        if(error != nil){
            print(error)
            return
        }
        self.parent?.dismiss(animated: true, completion: nil)
    }

}

Answer 1

您想要的是这种东西。我删除从功能的几个变量，但你也可以添加对方。我只是想确保代码编译。

@IBAction func createAccountAction(_ sender: AnyObject) {

    let usersRef = Database.database().reference().child("Users")

    let userDictionary : NSDictionary = ["email" : emailTextField.text!, "Name": nameTextField.text!]

    if emailTextField.text == "" {
        let alertController = UIAlertController(title: "Error", message: "Please enter your email and password", preferredStyle: .alert)
        let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
        alertController.addAction(defaultAction)
        self.present(alertController, animated: true, completion: nil)
    } else {
        Auth.auth().createUser(withEmail: self.emailTextField.text ?? "", password: self.passwordTextField.text ?? "") { (result, error) in
            if error != nil {
                let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .alert)
                let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
                alertController.addAction(defaultAction)
                self.present(alertController, animated: true, completion: nil)
                return
            }
            guard let user = result?.user else { return }

            // HERE YOU SET THE VALUES

            usersRef.child(user.uid).setValue(userDictionary, withCompletionBlock: { (error, ref) in
                if error != nil { print(error); return }
                self.addImageURLToDatabase(uid: user.uid, values: ["Put": "Your Values Here" as AnyObject])
            })

        }
    }
}
func addImageURLToDatabase(uid:String, values:[String:AnyObject]){
    let usersRef = Database.database().reference().child("Users").child(uid)
    usersRef.updateChildValues(values) { (error, ref) in
        if(error != nil){
            print(error)
            return
        }
        self.parent?.dismiss(animated: true, completion: nil)
    }
}

无法在Firebase数据库中合并两个Firebase阵列

1 个答案: