1 reply

Discord OAuth + AdditionalFields flow not working as expected.

Next.jsOAuth related

Hello,

I am using Discord social provider as the ONLY form of logging into my application. I am using a series of different scopes including ⁨

guilds

guilds

⁩, ⁨

email

email

⁩ and ⁨

identity

identity

⁩, with the aim to be able to store as much information about the currently logged in user.

The current session object includes the following properties:
⁨

"user": {
      "name": "Codex 🧃",
      "email": "EMAIL",
      "emailVerified": true,
      "image": "https://cdn.discordapp.com/avatars/795322752440467517/a6811a995f700e33acea73c586d03a6f.png",
      "createdAt": "2026-01-31T14:05:46.096Z",
      "updatedAt": "2026-01-31T14:05:46.096Z",
      "id": "ACCOUNT_ID"
   }

"user": {
      "name": "Codex 🧃",
      "email": "EMAIL",
      "emailVerified": true,
      "image": "https://cdn.discordapp.com/avatars/795322752440467517/a6811a995f700e33acea73c586d03a6f.png",
      "createdAt": "2026-01-31T14:05:46.096Z",
      "updatedAt": "2026-01-31T14:05:46.096Z",
      "id": "ACCOUNT_ID"
   }

⁩

It doesn't include other properties such as the user guilds, discord ID etc.

As such, I added the following to the ⁨

auth.ts

auth.ts

⁩ file:

⁨

  user: {
    additionalFields: {
      discordId: { type: "string", unique: true, nullable: true, input: false },
    },
  },

  user: {
    additionalFields: {
      discordId: { type: "string", unique: true, nullable: true, input: false },
    },
  },

⁩

⁨

    discord: {
      clientId: process.env.DISCORD_CLIENT_ID!,
      clientSecret: process.env.DISCORD_CLIENT_SECRET!,
      scope: ["identify", "email", "guilds"],
      mapProfileToUser: (profile) => {
        console.log(profile);
        return {
          discordId: profile.id,
        };
      },
    },

    discord: {
      clientId: process.env.DISCORD_CLIENT_ID!,
      clientSecret: process.env.DISCORD_CLIENT_SECRET!,
      scope: ["identify", "email", "guilds"],
      mapProfileToUser: (profile) => {
        console.log(profile);
        return {
          discordId: profile.id,
        };
      },
    },

⁩

When I console.log the profile I can see all of the "missing" properties, but even after restarting the server, and logging out and back in, the new discordId property still doesn't exist on the User object.

⁨

const Dashboard: React.FC = () => {
  const { data } = authClient.useSession();

  return (
    <div>
      <pre>{JSON.stringify(data, null, 3)}</pre>
    </div>
  );
};

const Dashboard: React.FC = () => {
  const { data } = authClient.useSession();

  return (
    <div>
      <pre>{JSON.stringify(data, null, 3)}</pre>
    </div>
  );
};

⁩

Discord OAuth + AdditionalFields flow not working as expected.

Next.jsOAuth related

Hello,

I am using Discord social provider as the ONLY form of logging into my application. I am using a series of different scopes including ⁨

guilds

guilds

⁩, ⁨

email

email

⁩ and ⁨

identity

identity

⁩, with the aim to be able to store as much information about the currently logged in user.

The current session object includes the following properties:
⁨

"user": {
      "name": "Codex 🧃",
      "email": "EMAIL",
      "emailVerified": true,
      "image": "https://cdn.discordapp.com/avatars/795322752440467517/a6811a995f700e33acea73c586d03a6f.png",
      "createdAt": "2026-01-31T14:05:46.096Z",
      "updatedAt": "2026-01-31T14:05:46.096Z",
      "id": "ACCOUNT_ID"
   }

"user": {
      "name": "Codex 🧃",
      "email": "EMAIL",
      "emailVerified": true,
      "image": "https://cdn.discordapp.com/avatars/795322752440467517/a6811a995f700e33acea73c586d03a6f.png",
      "createdAt": "2026-01-31T14:05:46.096Z",
      "updatedAt": "2026-01-31T14:05:46.096Z",
      "id": "ACCOUNT_ID"
   }

⁩

It doesn't include other properties such as the user guilds, discord ID etc.

As such, I added the following to the ⁨

auth.ts

auth.ts

⁩ file:

⁨

  user: {
    additionalFields: {
      discordId: { type: "string", unique: true, nullable: true, input: false },
    },
  },

  user: {
    additionalFields: {
      discordId: { type: "string", unique: true, nullable: true, input: false },
    },
  },

⁩

⁨

    discord: {
      clientId: process.env.DISCORD_CLIENT_ID!,
      clientSecret: process.env.DISCORD_CLIENT_SECRET!,
      scope: ["identify", "email", "guilds"],
      mapProfileToUser: (profile) => {
        console.log(profile);
        return {
          discordId: profile.id,
        };
      },
    },

    discord: {
      clientId: process.env.DISCORD_CLIENT_ID!,
      clientSecret: process.env.DISCORD_CLIENT_SECRET!,
      scope: ["identify", "email", "guilds"],
      mapProfileToUser: (profile) => {
        console.log(profile);
        return {
          discordId: profile.id,
        };
      },
    },

const Dashboard: React.FC = () => {
  const { data } = authClient.useSession();

  return (
    <div>
      <pre>{JSON.stringify(data, null, 3)}</pre>
    </div>
  );
};

const Dashboard: React.FC = () => {
  const { data } = authClient.useSession();

  return (
    <div>
      <pre>{JSON.stringify(data, null, 3)}</pre>
    </div>
  );
};

⁩

Discord OAuth + AdditionalFields flow not working as expected.

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