Adding additional data to user profile [any provider | custom user handling]

[Amantel]

Your question

How to add additional data during the signin / register process and use it in provider callback.

What are you trying to do

On the front-end user fills in 10 fields form and clicks register button signIn('credentials', { info: myFormInfo }, { someotherinfo: myFormInfo})
In the credentials provider async authorize(credentials) function in credentials I have access to info variable. Which is exactly what I want. someotherinfo is nowhere to be found, not exposed, I think. That's fine.

Sadly, if I use signIn('spotify', { info: myFormInfo }, { someotherinfo: myFormInfo}), in the only available profile function in the provider, I can't get info and someotherinfo - any of them will do.

Note I believe that using 3rd parameter should not be used for my goals, but I keep it here, as a reference.

Question history

There are several questions on the board that are loosely connected to the topic (including one by me).
#1363
#901
#562

Last one introduce an ability to add additional parameters to the /authorize endpoint through the third argument of signIn() which is cool, but not what I want.
I want to access both those parameters and parameters from second argument of signIn in provider callback and, probably, on signIn callback.

• Found the documentation helpful
• Found documentation but was incomplete
• Could not find relevant documentation
• Found the example project helpful
• Did not find the example project helpful

[Amantel]

How to add additional data during the signin / register process and use it in provider callback.

In provider callback, or, in sing-in callback - that would be great too.