BA
Better Auth•2mo ago
hunita

Using mongodb adapter and generateId creates id field in addition to _id field

using this config: 
import { createId } from '@paralleldrive/cuid2'

const auth = betterAuth({
  // ...
  database: mongodbAdapter(client.db()),
  advanced: {
    generateId: () => return createId()
  }
})
import { createId } from '@paralleldrive/cuid2'

const auth = betterAuth({
  // ...
  database: mongodbAdapter(client.db()),
  advanced: {
    generateId: () => return createId()
  }
})
leads to user documents having the following form: 
// user
{
  "_id": ObjectId('67dee48723670eccd7f45380'),
  "id": "g966fyld09zcrhbq7v6wiib1",
  "name": " ... ",
  // ...
}
// user
{
  "_id": ObjectId('67dee48723670eccd7f45380'),
  "id": "g966fyld09zcrhbq7v6wiib1",
  "name": " ... ",
  // ...
}
This seems to be intended behavior, but I would like to be able to override _id entirely. Is this possible?
1 Reply
bekacru
bekacru•2mo ago
jsut for mongodb adapter, we currently doesn't support a custom id generator. It should be supported soon but you can also use mongodb with prisma instead and the prisma adapter does support custom IDs

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