createSchema method being ignored when creating custom adapter #1159

New Issue

GiteaMirror · 2026-03-13T08:25:36-05:00

GiteaMirror commented

2026-03-13 08:25:36 -05:00

Originally created by @er1chi on GitHub (May 5, 2025).

Is this suited for github?

Yes, this is suited for github

To Reproduce

create basic betterAuth config
Follow documented steps to creating a custom adapter
run pnpm dlx @better-auth/cli generate

Current vs. Expected behavior

Expected: provided createSchema method to be utilized from customAdapter

Bug: cli's generate command and subsequently getGenerator method fails when providing custom id/adapter. getGenerator looks in the following adapters object which will always fail for previously mentioned case

export const adapters = {
	prisma: generatePrismaSchema,
	drizzle: generateDrizzleSchema,
	kysely: generateMigrations,
};

results in 'custom-adapter' is not supported error

What version of Better Auth are you using?

1.2.8-beta.1

Provide environment information

- Mac

Which area(s) are affected? (Select all that apply)

Backend

Auth config (if applicable)

import { betterAuth } from "better-auth"
export const auth = betterAuth({
  emailAndPassword: {  
    enabled: true
  },
  database: customAdapter(cfg)
});

Additional context

using 1.2.8-beta.1 to resolve type errors as changes from PR 2398 weren't pushed to npm registry I believe? Not sure how that works exactly

Originally created by @er1chi on GitHub (May 5, 2025). ### Is this suited for github? - [x] Yes, this is suited for github ### To Reproduce 1. create basic `betterAuth` config 2. Follow documented steps to creating a custom adapter 3. run `pnpm dlx @better-auth/cli generate` ### Current vs. Expected behavior Expected: provided `createSchema` method to be utilized from `customAdapter` Bug: cli's `generate` command and subsequently `getGenerator` method fails when providing custom id/adapter. `getGenerator` looks in the following `adapters` object which will always fail for previously mentioned case ```ts export const adapters = { prisma: generatePrismaSchema, drizzle: generateDrizzleSchema, kysely: generateMigrations, }; ``` results in `'custom-adapter' is not supported` error ### What version of Better Auth are you using? 1.2.8-beta.1 ### Provide environment information ```bash - Mac ``` ### Which area(s) are affected? (Select all that apply) Backend ### Auth config (if applicable) ```typescript import { betterAuth } from "better-auth" export const auth = betterAuth({ emailAndPassword: { enabled: true }, database: customAdapter(cfg) }); ``` ### Additional context using 1.2.8-beta.1 to resolve type errors as changes from PR 2398 weren't pushed to npm registry I believe? Not sure how that works exactly

GiteaMirror closed this issue

2026-03-13 08:25:36 -05:00

GiteaMirror commented

2026-03-13 08:25:37 -05:00

@dosubot[bot] commented on GitHub (Aug 4, 2025):

Hi, @0xcire. I'm Dosu, and I'm helping the better-auth team manage their backlog and am marking this issue as stale.

Issue Summary:

You reported that in Better Auth v1.2.8-beta.1, the createSchema method in your custom adapter is ignored when running the generate CLI command.
The root cause is that the getGenerator function only recognizes built-in adapters, causing a "custom-adapter is not supported" error.
This prevents the CLI from using your custom adapter's schema generation as intended.
There has been no further activity or comments on this issue since it was opened.

Next Steps:

Please let me know if this issue is still relevant with the latest version of better-auth by commenting here to keep the discussion open.
If I do not hear back within 7 days, I will automatically close this issue.

Thank you for your understanding and contribution!

@dosubot[bot] commented on GitHub (Aug 4, 2025): Hi, @0xcire. I'm [Dosu](https://dosu.dev), and I'm helping the better-auth team manage their backlog and am marking this issue as stale. **Issue Summary:** - You reported that in Better Auth v1.2.8-beta.1, the `createSchema` method in your custom adapter is ignored when running the `generate` CLI command. - The root cause is that the `getGenerator` function only recognizes built-in adapters, causing a "custom-adapter is not supported" error. - This prevents the CLI from using your custom adapter's schema generation as intended. - There has been no further activity or comments on this issue since it was opened. **Next Steps:** - Please let me know if this issue is still relevant with the latest version of better-auth by commenting here to keep the discussion open. - If I do not hear back within 7 days, I will automatically close this issue. Thank you for your understanding and contribution!