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next auth session user id

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Rex posted this in #help-forum
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RexOP
how can i add the user id to the session?
callbacks: {

        async session({token, session}) {
            if (token) {
                session.user.id = token.id
                session.user.name = token.name
                session.user.email = token.email
                session.user.image = token.image
            }
            return session
        },

        async jwt({token, user}) {
            if (user) {
                token.id = user.id
                token.name = user.name
                token.email = user.email
                token.image = user.image
            }
            return token
        
        }
    }
nextauth.js

it logs as undefined when i do this
    const { data: session } = useSession()
    console.log(session.user.id)

18 Replies

as the example i showed you was for server side one, so i have little experance with client side version
RexOP
{
  user: {
    name: 'Tristan Gee',
    email: 'tristangee@gmail.com',
    image: 'https://lh3.googleusercontent.com/a/ACg8ocJldDTiT0E38YOOb4WtcbbnDnbraeGtAqQZVuuceyiqLw=s96-c'
  },
  expires: '2023-12-18T01:16:21.890Z'
}
no id at all
thats weird
hm my token appears to be undefined
async session({token, session}) {
            console.log('token', token)
            if (token) {
                session.user.id = token.id
                session.user.name = token.name
                session.user.email = token.email
                session.user.image = token.image
            }
            return session
        },

        async jwt({token, user}) {
            console.log('user', user)
            if (user) {
                token.id = user.id
                token.name = user.name
                token.email = user.email
                token.image = user.image
            }
            return token
        
        }
i logged token and user, and token was undefined
i signed out and signed in again
riský
yeah i would have thought siging out would force it to recreate it...
Large oak-apple gall
u can create a custom type definition for nextauth, like:
import NextAuth from 'next-auth' declare module 'next-auth' { interface User { id?: string | null name?: string | null email?: string | null image?: string | null } interface Session { user: User expires: ISODateString } }
riský
that isn't valid because he used console.log which typescript has no say over
Morelet’s Crocodile
To add the user id to the session, you can use the callbacks object in your nextauth.js file. Here's an example of how you can modify the session and jwt callbacks to add the user id:

callbacks: {
  async session({ token, session }) {
    if (token) {
      session.user.id = token.id;
      session.user.name = token.name;
      session.user.email = token.email;
      session.user.image = token.image;
    }
    return session;
  },

  async jwt({ token, user }) {
    if (user) {
      token.id = user.id;
      token.name = user.name;
      token.email = user.email;
      token.image = user.image;
    }
    return token;
  }
}


Make sure you have these callbacks defined in your nextauth.js file.

Regarding the issue with logging the user id as undefined, it's possible that the session data is not yet available when you're trying to access it. You can try adding a conditional check to ensure that the session data is present before accessing the user id:

const { data: session } = useSession();
console.log(session?.user?.id);


The optional chaining operator (?.) will prevent the error if the session or user object is undefined.

If you're still experiencing issues, please provide more information about your code and how you're using NextAuth.js so that we can assist you further.
actually i just want to be able to track whos logged in
so maybe theres another solution for that too
sorry for late reply
RexOP
whats the difference between the users and accounts table?