更新firebase中字典中的单个值 – Swift项目

我正在使用swift和firebase处理iOS应用程序。 我试图让用户使用单独的按钮将他的电子邮件和密码以及存储在firebase中的其余信息更改到同一个视图控制器中。

以下是仪表板中一个用户的示例：

{ "Users" : { "08e5443c-cdde-4fda-8733-8c4fce75dd34" : { "BusinessName" : "looliCake", "Category" : "Cooking", "City" : "Riyadh", "ContactMe" : "05551233210", "Details" : "many flaiver choose", "Email" : "[e-mail]", "PhoneNumber" : "05551233210", "Provider" : "123", "ShortDescription" : "best pop cake ever . ", "Website1" : "www.looliCack.com", "Website2" : "https://www.instagram.com/loolicack/" } } } 

这是代码：

 let mainpass = NSUserDefaults.standardUserDefaults().objectForKey("password") as? String let mainEmail = NSUserDefaults.standardUserDefaults().objectForKey("Email") as? String @IBAction func EditEmail(sender: AnyObject) { if EmailAddressTF.text=="" { let alert = UIAlertController(title: "Oops!", message:"Make sure to fill in all required textfields", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} } else { let isEqu = (mainEmail == self.EmailAddressTF.text) if(isEqu == true) { } else { let ref = Firebase(url: "https://businesswallet.firebaseio.com/") ref.changeEmailForUser(mainEmail, password: mainpass, toNewEmail: self.EmailAddressTF.text, withCompletionBlock: { error in if error != nil { if let errorCode = FAuthenticationError(rawValue: error.code) { switch (errorCode) { case .EmailTaken: print("Email taken") let alert = UIAlertController(title: "Oops!", message:"Sorry,Email taken", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} case .InvalidEmail: print("invalid email") let alert = UIAlertController(title: "Oops!", message:"invalid email", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} case .NetworkError: print("Network Error") let alert = UIAlertController(title: "Oops!", message:"Network error, check your connection", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} default: print("Unknown Error") let alert = UIAlertController(title: "Oops!", message:"Unknown Error", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} } } } else { NSUserDefaults.standardUserDefaults().setValue(self.EmailAddressTF.text, forKey: "Email") print("Email changed successfully") let newUser = [ "Provider": self.PasswordTF.text!, "Email": self.EmailAddressTF.text, "BusinessName": self.BusinessNameTF.text , "ShortDescription" : self.ShortDescriptionTF.text, "Category" : self.itemSelected, "City" : self.CityTF.text, "ContactMe" : self.ContactMeTF.text, "PhoneNumber" : self.PhoneNumberTF.text, "Website1": self.Website1TF.text, "Website2": self.Website2TF.text, "Details": self.DetailsTV.text ] self.ref.childByAppendingPath("Users").childByAppendingPath(self.ref.authData.uid).updateChildValues(newUser) self.navigationController?.popViewControllerAnimated(true) } }) } //Big Else } } //EditEmailButton @IBAction func EditPassword(sender: AnyObject) { if PasswordTF.text=="" { let alert = UIAlertController(title: "Oops!", message:"Make sure to fill in all required textfields", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} } else { if RepasswordTF.text != PasswordTF.text { let alert = UIAlertController(title: "Oops!", message:"You Entered Different Passwords", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} } else { ref.changePasswordForUser( NSUserDefaults.standardUserDefaults().objectForKey("Email") as? String, fromOld: NSUserDefaults.standardUserDefaults().objectForKey("password") as? String, toNew: self.PasswordTF.text) { (ErrorType) -> Void in if ErrorType != nil { print(ErrorType) print("There was an error processing the request") } else { NSUserDefaults.standardUserDefaults().setValue(self.PasswordTF.text, forKey: "password") print("Password changed successfully") } } let newUser = [ "Provider": self.PasswordTF.text!, "Email": self.EmailAddressTF.text, "BusinessName": self.BusinessNameTF.text , "ShortDescription" : self.ShortDescriptionTF.text, "Category" : self.itemSelected, "City" : self.CityTF.text, "ContactMe" : self.ContactMeTF.text, "PhoneNumber" : self.PhoneNumberTF.text, "Website1": self.Website1TF.text, "Website2": self.Website2TF.text, "Details": self.DetailsTV.text ] self.ref.childByAppendingPath("Users").childByAppendingPath(self.ref.authData.uid).updateChildValues(newUser) self.navigationController?.popViewControllerAnimated(true) } } //else } @IBAction func EditBusinessInfo(sender: AnyObject) { if BusinessNameTF.text=="" { let alert = UIAlertController(title: "Oops!", message:"Make sure to fill in all required textfields", preferredStyle: .Alert) alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in }) self.presentViewController(alert, animated: true){} } else { let newUser = [ "Provider": self.PasswordTF.text!, "Email": self.EmailAddressTF.text, "BusinessName": self.BusinessNameTF.text , "ShortDescription" : self.ShortDescriptionTF.text, "Category" : self.itemSelected, "City" : self.CityTF.text, "ContactMe" : self.ContactMeTF.text, "PhoneNumber" : self.PhoneNumberTF.text, "Website1": self.Website1TF.text, "Website2": self.Website2TF.text, "Details": self.DetailsTV.text ] self.ref.childByAppendingPath("Users").childByAppendingPath(self.ref.authData.uid).updateChildValues(newUser) self.navigationController?.popViewControllerAnimated(true) } } 

在每个按钮中，我正在更新firebase中的整个字典！ 哪个错了！

如何在firebase中仅更新电子邮件按钮中的电子邮件值，以及密码按钮中的提供者？

Answer 1

评论中的这个问题和答案帮助了我。 由于没有正式回答的问题，我将添加一个更新的代码，因为评论中的一个已被弃用。

 ref.child("yourKey").child("yourKey").updateChildValues(["yourKey": yourValue]) 

这对我来说非常合适。

Answer 2

您可以直接导航到要更新的单个值，然后使用setValue（这里给它赋值）这是一个非常简单的示例：

 var key : FIRDatabaseReference! override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. addData() } func addData() { var data :Dictionary = ["name":"nawal","id":123] key = DBprovider.instance.DBRef.child("Data").childByAutoId() key.setValue(data) } 

//添加一个更新的按钮名称或whatEver，并将其作为Action连接

 @IBAction func updateData(_ sender: Any) { DBprovider.instance.DBRef.child("Data").child(key.key).child("id").setValue(111) } 

Answer 3

  let path1 = FirebaseBaseUrl + "users/" + id let chilRef1 = FIRDatabase.database().referenceFromURL(path1) // chilRef1.updateChildValues(["status": "online"]) chilRef1.updateChildValues(["status": "offline"]) { (error, ref) in if(error != nil){ print("Error",error) }else{ print("\n\n\n\n\nYou are Offline...") } }