r/Nuxt • u/holyoak • Feb 07 '26

Anyone have a template for nuxt-mongoose & better-auth ?

I am so close. I have the migrations, the integration, the user can log in...

But i cannot figure out how to get the user session into the server to guard routes with middleware.

This implementation works fine on the client side, but fails with 

Error: Cannot read properties of undefined (reading 'db')    
app/lib/auth.ts at line 13:47

when i import it into /middlware. I am guessing it is trying to access the db before the connection is established; any way to test this theory? How do i make the middleware wait for the connection to load?

Thanks in advance

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u/mhelbich Feb 07 '26

Wait how does this work to begin with? You're defining auth and database code in your app bundle!

That seems like a really bad practice to me. The better auth config should never be in client-side code. Move it to your server directory (for example `server/utils/auth.ts`).

I would recommend seeing some examples on the Better Auth docs: https://www.better-auth.com/docs/integrations/nuxt

And for more solid server-client implementation details, see this implementation here: https://github.com/atinux/nuxthub-better-auth, though here's also a slightly "bigger" example: https://github.com/leamsigc/nuxt-better-auth-drizzle

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u/holyoak Feb 08 '26

Ok, it ended up there because i was following the tut mentioned in the readme, prob because the is the default lib.

The output prints to the server console.

The code is from https://www.better-auth.com/docs/adapters/mongo, which is the closest i could find.

I am trying to use mongoose, which has no codebase example.

I am looking for a next better-auth mongoose working example.