Stephen Comments - Answer Overflow

I had assumed so, but I'm not seeing this behaviour: I created an account with that username first, and then signed up with Discord. It doesn't seem to have flagged the duplicate name. Calling here:

            await client.signIn.social({
                provider,
                callbackURL: "/dashboard"
            }, {
                onError: (ctx) => {
                    alert(JSON.stringify(ctx))
                }
            });

            await client.signIn.social({
                provider,
                callbackURL: "/dashboard"
            }, {
                onError: (ctx) => {
                    alert(JSON.stringify(ctx))
                }
            });

Mapper:

    discord: {
      clientId: DISCORD_CLIENT_ID,
      clientSecret: DISCORD_CLIENT_SECRET,
      mapProfileToUser: (profile) => {
        // Note to self: "name is a requirement in Better Auth. In the future this will be customizable." AKA can't unmap name.
        return {
          username: profile.username,
          displayUsername: profile.username,
        };
      },
    },

    discord: {
      clientId: DISCORD_CLIENT_ID,
      clientSecret: DISCORD_CLIENT_SECRET,
      mapProfileToUser: (profile) => {
        // Note to self: "name is a requirement in Better Auth. In the future this will be customizable." AKA can't unmap name.
        return {
          username: profile.username,
          displayUsername: profile.username,
        };
      },
    },

14 replies

BABetter Auth

•Created by Stephen on 4/29/2025 in #help

Populate username field with social usernames

Thanks! Lastly, I presume I am responsible for handling the uniqueness checks here? I see that it's automatically handled in the client.signUp.email, but it doesn't appear to be here. It's letting me create an account with a username that's already taken so long as I map it in here

14 replies

BABetter Auth

•Created by Stephen on 4/29/2025 in #help

Populate username field with social usernames

Just a couple follow ups on this, not seeing it mentioned on those docs 1. Do you know if there's a way to stop a field mapping? For eg, the "name" field is mapping. I tried setting it to undefined and null, neither stopped it. name has no purpose in my project 2. It's a little sticky with username and displayUsername. The username plugin from my understanding has username sanitised to be recognised by system, and displayUsername as the original input. What's the best way for me to map this? I'd need to understand what sanitization is done I think, unless there is a function for this

14 replies

BABetter Auth

•Created by Stephen on 4/29/2025 in #help

Populate username field with social usernames

Thank you very much!

14 replies

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