this is supposed to take the user ID from the result!.user.uid and store it a variable or function in order for me to use it again.
the problem is that I dont know how to get it to store the value outside of this function.
Ive tried to make it store to a variable outside of the initial button function, and Ive also tried to return it outside of the function by removing a part of the code which made it become a void. Im not sure where i need to go/what else I can try and do in order to fix this problem.
If anybody know how do I retrieve my document ID from this code your help would be greaty appreciated
#IBAction func NextButtonTapped(_ sender: Any) {
//validate the fileds
let Error = validateFields()
if Error != nil {
// there is somthing wrong with the fields show error message
showError(Error!)
}
else {
// create cleaned versions of the data
let Password = PasswordTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Email = EmailTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Firstname = FirstnameTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Lastname = LastnameTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Age = AgeTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
// create the user
Auth.auth().createUser(withEmail: Email, password: Password) { (results, Err) in
// check for errors
if Err != nil {
// there was an error creating the user
self.showError("Error creating user")
}
else {
// user was created succesfully store first and last name
let db = Firestore.firestore()
db.collection("users").document(results!.user.uid).setData(["first name":Firstname, "last name":Lastname, "age":Age, "uid":results!.user.uid]) { (Error) in
if Error != nil {
// show error message
self.showError("error saving user data")
}
//showing users document id
}
//transition to the home screen
self.transitionToHome()
}
}
}
}
I have no idea what to do any help would be amazing,
thank you very much!!!!
Define a uid variable outside of the IBAction function like so.
var uid: String? = nil
Then, within the createUser function
self.uid = results!.user.uid
Related
i am currently working on a project where users have accounts with information about them. And I want that every client can get and load the data with just the ID of the target. I wanted to solve this with a function, but i don't know how to return the data, I hope you can help me!
Screenshot Firebase
func getUserData(targetID: String)->String{
let db = Database.database(url: "link")
db
.reference()
.child("users")
.child(targetID)
.child("/username")
.getData(completion: { error, snapshot in
guard error == nil else {
print(error!.localizedDescription)
return;
}
let userName = snapshot.value as? String ?? "null";
});
return userName //won't work, but how can I make it work?
}
#IBAction func NextButtonTapped(_ sender: Any) {
//validate the fileds
let Error = validateFields()
if Error != nil {
// there is somthing wrong with the fields show error message
showError(Error!)
}
else {
// create cleaned versions of the data
let Password = PasswordTextField.text!.trimmingCharacters(in:
.whitespacesAndNewlines)
let Email = EmailTextField.text!.trimmingCharacters(in:
.whitespacesAndNewlines)
let Firstname = FirstnameTextField.text!.trimmingCharacters(in:
.whitespacesAndNewlines)
let Lastname = LastnameTextField.text!.trimmingCharacters(in:
.whitespacesAndNewlines)
let Age = AgeTextField.text!.trimmingCharacters(in:
.whitespacesAndNewlines)
// create the user
Auth.auth().createUser(withEmail: Email, password: Password) {
(results, Err) in
// check for errors
if Err != nil {
// there was an error creating the user
self.showError("Error creating user")
}
else {
// user was created succesfully store user info
let db = Firestore.firestore()
db.collection("users").document(results!.user.uid).setData(["first
name":Firstname, "last name":Lastname, "age":Age,
"uid":results!.user.uid]) { (Error) in
if Error != nil {
// show error message
self.showError("error saving user data")
}
}
//transition to the home screen
self.transitionToHome()
}
}
}
}
So basically here I am authenticating the user on firebase. (I made
the document ID = the user ID) then I am entering the users info
into the firebase database into a document where its ID is also
equal to the users ID from when they are authenticated. Now what I
am trying to do is to create or get a reference to the document ID
where some of the users info is already stored like name, last name,
age... so I can later add/merge more info into that same document
the name, last name and age is stored under. This is how I am trying
to merge the info together in a diffrent view controller
db.collection("users").document(*******).setData(["middle
Name":Middlename, "favourite colour":Favouritecolour], merge: true)
{ (Error) in
if Error != nil {
// show error messgae
self.showError("error saving user data")
}
}
Where I put "*******" is where I am supposed to reference the
document ID so I can merge/add this info into the same document as
the other users information where the name, last name and age is
stored.
The code I showed you and asked about earlier on how to get a
document ID from, was code I found on stack overflow where they guy
had a similar problem as mine. He was trying to access something out
of his document but I am just trying to create a reference to the
document ID.
The code form earlier:
func getDocument() {
//get specific document from current user
let docRef =
Firestore.firestore().collection("users").document(Auth.auth().currentUs er?.uid ?? "")
//get data
docRef.getDocument { (document, Error) in
if let document = document, document.exists {
let dataDescription = document.data()
print(dataDescription?["uid"])
} else {
print("Document does not exist")
}
}
}
But I don't know if this code will help me, I just thought it might
because its also accessing the document, thats why I though it might
be my answer to getting the document ID.
So basically my question is what do I need to do wether its adding
to the code I found on this site, or if I have to write my own code,
so I can get a reference to the Document ID where my name, last name
and Age is stored, so I can merge more Info into that document
Thank You Very Much!!!
To print the document ID do something like this:
let docRef = Firestore.firestore().collection("users").document(Auth.auth().currentUser?.uid ?? "")
// Get data
docRef.getDocument { (document, error) in
if let document = document, document.exists {
let dataDescription = document.data()
print(dataDescription?["firstname"])
print(document.documentID)
} else {
print("Document does not exist")
}
}
I highly recommend spending some time in the Firestore documentation, as this is covered in there under getting multiple documents from a collection
I just started working with servers in swift and I'm using parse server to store a database of users when they create an account for my app. I have this function called sign up that is linked to a sign up button which works fine and properly stores user's info into my parse database.:
#IBAction func signUp(_ sender: AnyObject) {
//I first check to see if the users left any of the fields blank
if firstName.text == "" || lastName.text == "" || email.text == "" || userName.text == "" || password.text == "" {
createAlert(title: "Error in form", message: "Please fill in all text fields")
//If everything is filled in
}else{
let user = PFUser()
user.username = userName.text
user["firstname"] = firstName.text
user["lastname"] = lastName.text
user.email = email.text
user.password = password.text
user.signUpInBackground(block: { (success, error) in
if error != nil {
var displayErrorMessage = "Please try again later."
if let errorMessage = (error! as NSError).userInfo["error"] as? String {
displayErrorMessage = errorMessage
}
self.createAlert(title: "Signup error", message: displayErrorMessage)
}else{
print("User signed up")
}
})
}
}
Can anyone help me write a function that deletes a specified user or many loops through all users and deletes them.
Thanks
Don't put that code on a client. Yuck.
Deleting a user is something you want to safeguard very carefully. Put that in cloud code if you really need it, and do validation to ensure it's used properly.
I.e., a user should only be able to make the request to delete their own user. Make a cloud code function that has the parameter userId, and check that param against request.user.id. If they don't match, return an error. Otherwise you can call the destroy method on that User.
You should also put a CLP in place to only allow the master key to delete a User object.
I have been trying to implement Chris’ answer here: Can I make Firebase use a username login process? for the Facebook login but I can’t seem to get my head around it.
So far I’ve tried to set conditions on the textField but as Firebase observer works asynchronously, the conditions to check if the username exists in the database won’t work.
let usernameString = usernameTextField.text
let uid = FIRAuth.auth()?.currentUser?.uid
ref.runTransactionBlock({ (currentData: FIRMutableData) -> FIRTransactionResult in
if var post = currentData.value as? [String : AnyObject], let uid = FIRAuth.auth()?.currentUser?.uid {
let usernamesDictionary = post["usernames"] as! NSDictionary
for (key, _) in usernamesDictionary {
if key as? String == usernameString {
print("username not available: \(key)")
}
else if usernameString == "" {
print("Uh oh! Looks like you haven't set a username yet.")
}
else if key as? String != usernameString {
print("username available: \(key)")
print("All set to go!")
let setValue: NSDictionary = [usernameString!: uid]
post["usernames"] = setValue
currentData.value = post
}
}
return FIRTransactionResult.successWithValue(currentData)
}
return FIRTransactionResult.successWithValue(currentData)
}
Then I tried creating /usernames/ node in the database and set up rules as:
{
"rules": {
"usernames": {
".read": "auth != null",
".write": "newData.val() === auth.uid && !data.exists()"
}
}
}
Now that won’t let me set any username to the database. I get confused in creating rules but my whole point is that I need a sign up flow with the username data that’s unique for each user in the database.
While trying every answer I found in related posts, what worked for me the easy way i.e. without making Firebase rules play a part in it or creating a separate usernames node in the database was to not put an if/else condition inside the Firebase observer but instead to use the exists() method of FIRDataSnapshot.
Now here’s the trick, while I did try only the exists() method with a simple observer but that did not help me. What I did was first query usernames in order, then match the username with queryEqualToValue to filter the query:
refUsers.queryOrderedByChild("username").queryEqualToValue(usernameString).observeSingleEventOfType(.Value , withBlock: {
snapshot in
if !snapshot.exists() {
if usernameString == "" {
self.signupErrorAlert("Uh oh!", message: "Looks like you haven't set a username yet.")
}
else {
// Update database with a unique username.
}
}
else {
self.signupErrorAlert("Uh oh!", message: "\(usernameString!) is not available. Try another username.")
}
}) { error in
print(error.localizedDescription)
}
}
This is the first time out of most of the answers here that worked for me. But for now, I don’t know if this would scale. Post your experiences and best practices. They’ll be appreciated.
I am working on new Firebase Log in. There are two categories in database. "Cooks" and "Customer". "Cooks" has a CookViewController and "Customers" has a customerViewController. I need to know which category this email belongs to so after logging in, segue to CookViewController or CustomerViewController. Below is code for sign in, but I have no idea how to tell which category the email belongs to. Thanks!
#IBAction func loginPressed(sender: AnyObject) {
if let email = emailField.text where email != "", let password = passwordField.text where password != "" {
FIRAuth.auth()?.signInWithEmail(email, password: password, completion: { (user, err) in
if err != nil {
print(err)
} else {
// Here I need to know whcih view Controller to Segue to:
self.performSegueWithIdentifier(identifier: String, sender: self)
}
}
Data Structure as below:
How about making your JSON like :-
yourApp:{
cooks:{
email1:true,
email3:true,
email4:true,
email7:true,
email8:true},
customers:{
email2:true,
email12:true,
email13:true,
email4:true,
email8:true},
users:{
uid1:{
email : blah#blah.com,
isCook: true
},
uid2:{
email : burp#blah.com,
isCook: false
}....
}
}
So you can either check in the cooks section or the customer section or the uid under users section itself and then relating to the isCook node, if he is ->Go to cookViewController, else go to customerViewController
Easiest way would be to check in the uid:-
FIRDatabase.database().reference().child("users/\(FIRAuth.auth()!.currentUser!.uid)/isCook").observeSingleEventOfType(.Value,withBlock:{(snap) in
if let isThisUserCook = snap.value as? Bool //or String{
if isThisUserCook == true{
//segue to cookVC
}else{
//segue to customerVC
}
}
})