Sign in with Apple not passing through fullName

[RobSwish]

• Xcode version: Version 11.2.1 (11B53)
• Firebase SDK version: 6.13.0
• Firebase Component: Auth - Sign in with Apple

Problem

I have added "Sign in with Apple" to my app. It all works perfectly except it does not pass the name through when authenticating. I am asking for full name and email in my code.

request.requestedScopes = [.fullName, .email]

The Sign in with Apple UI does display a cross next to the name, I don't know if it is supposed to show a tick, I've tried tapping this and changing my name but it does not change to a tick.

I can confirm through debugging that the "displayName" property of the Firebase user is nil after creation.

Relevant Code:

request.requestedScopes = [.fullName, .email]

[rizafran]

Thanks for reporting, @RobSwish. I'll try to replicate this on my end and I'll let you know with any updates.

[rizafran]

For the Sign in with Apple UI, it might be an intended behavior that the cross icon displays next to the name, and not changing to a tick. You may check out the same UI here.

[rizafran]

Hi @RobSwish, I was able to replicate the issue you encountered, and this is an expected behavior. The fullName is not returned in Apple's ID token so that we can't use it as displayName directly. However, you may opt to get the fullName through "appleIDCredential.fullName" in didCompleteWithAuthorization delegate method, and update user's profile by yourselves.

Additionally, it is mentioned here that Apple only shares the address with apps the first time a user signs in.

[paulb777]

Going to close this, since there's no obvious actions for us. Feel free to follow-up if you have more questions.

[jlubeck]

The documentation here says that:

Usually, Firebase stores the display name the first time a user signs in with Apple, which you can get with Auth.auth().currentUser.displayName. However, if you previously used Apple to sign a user in to the app without using Firebase, Apple will not provide Firebase with the user's display name.

But this is not the case.

I was able to update my user based on @rizafran 's comment (thanks!) but that is not what the doc says. So either changing the docs or making the code do what the docs say would be nice (this last option would be preferred in my opinion!)

[morganchen12]

@renkelvin based on my understanding we should update the documentation here, not the SDK behavior. Is this correct?

[RobSwish]

Thanks a lot! You got back to me so quickly I didn't notice, sorry!

I do think that the default behaviour should be for Firebase to save the name if it can as this is what it does for the other sign in methods such as Facebook and Google.

But it's good to know I can get the name through the other way you have mentioned.

[morganchen12]

I talked to @renkelvin about this and he mentioned that the current behavior exists because Sign In with Apple's behavior is inconsistent with the other authentication providers (Sign In with Apple does not always return the user's name).

I don't think Firebase saving the name to the user by default is a good idea since it makes it easier to accidentally link the name to other identifiable information, which is against Apple's license agreement if the user has chosen to anonymize their sign in info.

Unless this proves to be a significant pain point during development, we're likely not going to change the Firebase SDK behavior, though we can add this as an opt-in automatic behavior in FirebaseUI (see firebase/FirebaseUI-iOS#815).