Creating the Prisma schema

TypeScript

MongoDB

Update the Prisma schema

Open the prisma/schema.prisma file and replace the default contents with the following:

prisma/schema.prisma

datasource db {
  provider = "mongodb"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model Post {
  id       String    @id @default(auto()) @map("_id") @db.ObjectId
  slug     String    @unique
  title    String
  body     String
  author   User      @relation(fields: [authorId], references: [id])
  authorId String    @db.ObjectId
  comments Comment[]
}

model User {
  id      String   @id @default(auto()) @map("_id") @db.ObjectId
  email   String   @unique
  name    String?
  address Address?
  posts   Post[]
}

model Comment {
  id      String @id @default(auto()) @map("_id") @db.ObjectId
  comment String
  post    Post   @relation(fields: [postId], references: [id])
  postId  String @db.ObjectId
}

// Address is an embedded document
type Address {
  street String
  city   String
  state  String
  zip    String
}

There are also a number of subtle differences in how the schema is setup when compared to relational databases like PostgreSQL.

For example, the underlying ID field name is always _id and must be mapped with @map("_id").

For more information check out the MongoDB schema reference.