Keep User Data upon registration via google sign in (Flutter)

Hello, I was able to make a user keep his data upon registration with email and password by using updateUser().
Now I want the same when using social login (eg. Google)
Is manual linking the correct approach here? because im getting a 400 error "redirect_uri_mismatch" in midst of the auth flow.

adam1OP•2/2/25, 7:11 PM

i might need to add, that by "keeping user data" I mean for the registered user to have the same user_id as before to keep access to his old tables

garyaustin•2/2/25, 7:23 PM

Are you talking converting an anonymous user a authenticated user?

garyaustin•2/2/25, 7:24 PM

If so then this is the way: https://supabase.com/docs/guides/auth/auth-anonymous?queryGroups=language&language=dart#link-an-oauth-identity

adam1OP•2/2/25, 7:37 PM

when using "await supabase.auth.linkIdentity(OAuthProvider.google);" im getting the error 400, i read something about using deeplinks, would need to try it out

garyaustin•2/2/25, 7:41 PM

You'll have to see if a Flutter user comes along, but look at whatever guide there is for signInWithOAuth in flutter as it should be the same process.

Keep User Data upon registration via google sign in (Flutter)

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