#createOrUpdateUser usage

16 messages · Page 1 of 1 (latest)

modest finch
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I am trying to use createOrUpdateUser callback but I am having some issues.

I am calling thing signIn method with the signUp flow from an HTTP Action using the Password provider

I have a test user in the database already using this metod. So I am trying to register a 2nd time with the same email, and handle the duplicate user.

auth::store just throws an error when the email is a duplicate. I've just put a single console.log(args.existingUserId) in the createOrUpdateUser callback, but this line is never reached because of the error.

high minnowBOT
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Hi @modest finch. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

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The createOrUpdateUser callback is a part of Convex's global state management system that allows you to control account linking during the sign-in process. This callback is called before account creation and token generation. If specified, this callback is responsible for creating or updating the user document. For "credentials" providers, the callback is only called when createAccount is called ^1^.

In your case, if you are trying to register a second time with the same email, you should be able to handle the duplicate user in the createOrUpdateUser callback. If args.existingUserId is not null, it means that the user already exists, and you can return the existing user ID or update the user document as needed ^1^.

However, if you're getting an error before reaching the createOrUpdateUser callback, it might be due to some other issue. It would be helpful to know the exact error message you're getting.

If you're still having trouble, you might want to check out some examples of how to use the createOrUpdateUser callback in the Convex documentation ^4^.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@modest finch kapa.ai is still learning and improving, please let us know how it did by reacting below

modest finch
high minnowBOT
#

Let me check the knowledge base for you. One moment! :books:

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The error message you're seeing indicates that an account with the email [email protected] already exists. This error is thrown when you try to create a new account with an email that is already associated with an existing account.

In Convex, the createOrUpdateUser callback is designed to handle such scenarios. If a user with the same email already exists, args.existingUserId will not be null, and you can decide how to handle the situation. For example, you could return the existing user ID to link the new sign-in attempt to the existing account, or update the user document as needed ^1^.

However, if you're seeing this error before reaching the createOrUpdateUser callback, it suggests that the createOrUpdateUser callback might not be set up correctly. You might want to double-check your implementation of the createOrUpdateUser callback to ensure it's being called as expected.

If you're still having trouble, you might want to check out some examples of how to use the createOrUpdateUser callback in the Convex documentation ^4^.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@modest finch kapa.ai is still learning and improving, please let us know how it did by reacting below

modest finch
#

@high minnow here is my code in auth.ts

This is just placeholder for now to see the value of args.existingUserId

Any reason you see this would be throwing that error before logging the arg value?

import { Password } from "@convex-dev/auth/providers/Password";
import { Anonymous } from "@convex-dev/auth/providers/Anonymous";
import { convexAuth } from "@convex-dev/auth/server";
import { DataModel } from "./_generated/dataModel";

const CustomPassword = Password<DataModel>({
  profile(params) {
    return {
      email: params.email as string,
      first_name: params.first_name as string,
      last_name: params.last_name as string,
      full_name: params.full_name as string,
    };
  },
});

export const { auth, signIn, signOut, store } = convexAuth({
  providers: [Anonymous, CustomPassword],
  callbacks: {
    async createOrUpdateUser(ctx, args) {
      console.log(args.existingUserId);
      

      return null;
    },
  },
});
high minnowBOT
#

Let me check the knowledge base for you. One moment! :books:

#

Your createOrUpdateUser callback is currently returning null, which might be causing the issue. This callback is expected to return the ID of the user that should be associated with the current sign-in attempt. If null is returned, Convex will attempt to create a new user, which could lead to the "Account already exists" error if a user with the same email already exists.

In your createOrUpdateUser callback, you should implement logic to handle existing users and new users. If args.existingUserId is not null, it means that the user already exists, and you can return the existing user ID. If args.existingUserId is null, it means that the user does not exist yet, and you should create a new user and return the new user ID.

Here's an example of how you might implement this:

export const { auth, signIn, signOut, store } = convexAuth({
  providers: [Anonymous, CustomPassword],
  callbacks: {
    async createOrUpdateUser(ctx, args) {
      console.log(args.existingUserId);

      if (args.existingUserId) {
        // The user already exists, return the existing user ID
        return args.existingUserId;
      }

      // The user does not exist yet, create a new user
      const newUser = await ctx.db.insert('users', {
        email: args.profile.email,
        first_name: args.profile.first_name,
        last_name: args.profile.last_name,
        full_name: args.profile.full_name,
      });

      // Return the new user ID
      return newUser._id;
    },
  },
});

Please note that this is just a basic example and you might need to adjust it to fit your specific needs. For more information on how to use the createOrUpdateUser callback, you can refer to the Convex documentation [^1^][^4^].

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Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@modest finch kapa.ai is still learning and improving, please let us know how it did by reacting below

modest finch
#

@high minnow your sample code still throws that error before reaching the rest of the logic

high minnowBOT
#

Let me check the knowledge base for you. One moment! :books:

#

I'm sorry to hear that you're still encountering the issue. The error message you're seeing is typically thrown when Convex attempts to create a new user with an email that's already associated with an existing user. This usually happens when the createOrUpdateUser callback is not set up correctly or not being called as expected.

However, based on the code you've shared, your createOrUpdateUser callback seems to be set up correctly. It's strange that you're seeing the error before reaching the createOrUpdateUser callback.

At this point, I would recommend reaching out to Convex's support for further assistance. They should be able to help you debug the issue and provide more specific guidance based on your exact setup and use case. You can reach out to them through their Discord channel ^5^.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: