MongoDB Setup. Reference when using this Prisma feature.
⚠️ WARNING: MongoDB is NOT supported in Prisma ORM v7.
Support for MongoDB is planned for a future v7 release. If you need MongoDB, you must use Prisma ORM v6.
In prisma/schema.prisma:
datasource db {
provider = "mongodb"
url = env("DATABASE_URL")
}
generator client {
provider = "prisma-client-js"
}
MongoDB models must have a mapped _id field using @id and , usually of type with and .
@map("_id")Stringauto()db.ObjectIdmodel User {
id String @id @default(auto()) @map("_id") @db.ObjectId
email String @unique
name String?
}
Relations in MongoDB expect IDs to be db.ObjectId type.
model Post {
id String @id @default(auto()) @map("_id") @db.ObjectId
author User @relation(fields: [authorId], references: [id])
authorId String @db.ObjectId
}
In .env:
DATABASE_URL="mongodb+srv://user:[email protected]/mydb?retryWrites=true&w=majority"
prisma migrate commands do not work.prisma db push to sync indexes and constraints.prisma db pull to generate schema from existing data (sampling).Ensure your MongoDB instance is a Replica Set. Standalone instances do not support transactions. Atlas clusters are replica sets by default.
Ensure fields referencing IDs are decorated with @db.ObjectId if the target is an ObjectID.