SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

screenshot-2023-09-19-00-01-23-04-40deb401b9ffe8e1df2f1cc5ba

If it is not saved then we have to save the data manually in db. ST already saves some info in the db. Why not custom fields?. If we have to insert it manually, what is the correct way. Save the extra fields in the same table where the users some info already saved by ST

You have to save it somewhere manually. You can either use our user metadata feature

Or then save it in your own db against the user id that we provide.

Metadata will be fine. can you give me some references where extra fields save in metadata

See https://supertokens.com/docs/emailpassword/common-customizations/handling-signup-success

And https://supertokens.com/docs/emailpassword/common-customizations/usermetadata/store-data

Thanks man. I appreciate. Great work by you guys

Metadata will be shown in the dashboard right?

screenshot-2023-09-19-01-21-24-82-40deb401b9ffe8e1df2f1cc5ba

any code examples how to change user ID format

We use the `Supertokens.createUserIdMapping` function

```
ThirdPartyEmailPassword.init({
    override: {
        functions: (oI) => {
            return {
                ...oI,
                emailPasswordSignUp: async function (input) {
                    let response = await oI.emailPasswordSignUp(input);
                    if (response.status === "OK") {
                        // sign up successful
                        const customUserId = "<Custom user ID>"
                        await Supertokens.createUserIdMapping({
                            superTokensUserId: response.user.id,
                            externalUserId: customUserId,
                        })
                        response.user.id = customUserId;
                    }
                    
                    return response;
                },
                thirdPartySignInUp: async function (input) {
                    let response = await oI.thirdPartySignInUp(input);
                    if (response.status === "OK" && response.createdNewUser) {
                        // sign up successful
                        const customUserId = "<Custom user ID>"
                        await Supertokens.createUserIdMapping({
                            superTokensUserId: response.user.id,
                            externalUserId: customUserId,
                        })
                        response.user.id = customUserId;
                    }
                    
                    return response;
                }
            }
        }
    }
})
```