BA
Better Auth•3w ago
Perchun_Pak

how to return more data from `/get-session`

hello, I would want to store user's balance inside session object, instead of fetching it manually I tried to create a plugin for better auth, but it doesn't work (it worked a few days before, I didn't change code nor updated dependencies...) 
import type { BetterAuthClientPlugin } from "better-auth/client";
import type { BetterAuthPlugin } from "better-auth/plugins";

export const balancePlugin = () => {
  return {
    id: "balance",
    schema: {
      user: {
        fields: {
          balance: {
            type: "number",
            required: false,
            sortable: false,
            unique: false,
            returned: true,
          },
        },
      },
    },
  } satisfies BetterAuthPlugin;
};

export const balanceClientPlugin = () => {
  return {
    id: "balance",
    $InferServerPlugin: {} as ReturnType<typeof balancePlugin>,
  } satisfies BetterAuthClientPlugin;
};
import type { BetterAuthClientPlugin } from "better-auth/client";
import type { BetterAuthPlugin } from "better-auth/plugins";

export const balancePlugin = () => {
  return {
    id: "balance",
    schema: {
      user: {
        fields: {
          balance: {
            type: "number",
            required: false,
            sortable: false,
            unique: false,
            returned: true,
          },
        },
      },
    },
  } satisfies BetterAuthPlugin;
};

export const balanceClientPlugin = () => {
  return {
    id: "balance",
    $InferServerPlugin: {} as ReturnType<typeof balancePlugin>,
  } satisfies BetterAuthClientPlugin;
};
so my question is, how to store more data in the session object?
2 Replies
Glen Kurio
Glen Kurio•3w ago
If I'm not mistaken you don't need to create a custom plugin, all you need to do is to extend session with CustomSession built-in plugin: 
import { customSession } from "better-auth/plugins";
 
export const auth = betterAuth({
    plugins: [
        customSession(async ({ user, session }) => {
            const roles = findUserRoles(session.session.userId);
            return {
                roles,
                user: {
                    ...user,
                    newField: "newField",
                },
                session
            };
        }),
    ],
});
import { customSession } from "better-auth/plugins";
 
export const auth = betterAuth({
    plugins: [
        customSession(async ({ user, session }) => {
            const roles = findUserRoles(session.session.userId);
            return {
                roles,
                user: {
                    ...user,
                    newField: "newField",
                },
                session
            };
        }),
    ],
});
Docs link to this: https://www.better-auth.com/docs/concepts/session-management#customizing-session-response
Session Management | Better Auth
Better Auth session management.
rhitune
rhitune•3w ago
did you tried inferring fields?

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