Prisma Upgrade V7 Prisma Config

Prisma Config

Prisma v7 introduces prisma.config.ts as the central configuration file for the Prisma CLI.

Location

Place prisma.config.ts at your project root (next to package.json).

Basic Configuration

import 'dotenv/config'
import { defineConfig, env } from 'prisma/config'

export default defineConfig({
  schema: 'prisma/schema.prisma',
  migrations: {
    path: 'prisma/migrations',
  },
  datasource: {
    url: env('DATABASE_URL'),
  },
})

Configuration Options

schema

Path to your Prisma schema file:

schema: 'prisma/schema.prisma'

datasource.url

Database connection URL:

datasource: {
  url: env('DATABASE_URL'),
}

datasource.directUrl

Direct connection URL (bypassing connection pooler):

datasource: {
  url: env('DATABASE_URL'),
  directUrl: env('DIRECT_DATABASE_URL'),
}

datasource.shadowDatabaseUrl

Shadow database for migrations:

datasource: {
  url: env('DATABASE_URL'),
  shadowDatabaseUrl: env('SHADOW_DATABASE_URL'),
}

migrations.path

Directory for migration files:

migrations: {
  path: 'prisma/migrations',
}

migrations.seed

Seed command for prisma db seed:

migrations: {
  path: 'prisma/migrations',
  seed: 'tsx prisma/seed.ts',
}

Full Example

import 'dotenv/config'
import { defineConfig, env } from 'prisma/config'

export default defineConfig({
  // Schema location
  schema: 'prisma/schema.prisma',
  
  // Migration configuration
  migrations: {
    path: 'prisma/migrations',
    seed: 'tsx prisma/seed.ts',
  },
  
  // Database connection
  datasource: {
    url: env('DATABASE_URL'),
    directUrl: env('DIRECT_DATABASE_URL'),
    shadowDatabaseUrl: env('SHADOW_DATABASE_URL'),
  },
})

Environment Variables

The env() helper

Use env() to reference environment variables:

import { env } from 'prisma/config'

datasource: {
  url: env('DATABASE_URL'),
}

This provides type safety but does NOT load .env files automatically.

Loading .env files

Install and import dotenv:

npm install dotenv

import 'dotenv/config'  // Must be first import
import { defineConfig, env } from 'prisma/config'

Migrating from v6

Before (v6) - schema.prisma

datasource db {
  provider  = "postgresql"
  url       = env("DATABASE_URL")
  directUrl = env("DIRECT_URL")
}

After (v7) - prisma.config.ts

import 'dotenv/config'
import { defineConfig, env } from 'prisma/config'

export default defineConfig({
  schema: 'prisma/schema.prisma',
  datasource: {
    url: env('DATABASE_URL'),
    directUrl: env('DIRECT_URL'),
  },
})

And update schema.prisma:

datasource db {
  provider = "postgresql"
  // URLs now in prisma.config.ts
}

Custom Config Path

Use --config flag with CLI commands:

prisma migrate dev --config ./config/prisma.config.ts

Monorepo Configuration

import 'dotenv/config'
import { defineConfig, env } from 'prisma/config'
import path from 'path'

export default defineConfig({
  schema: path.join(__dirname, 'packages/database/prisma/schema.prisma'),
  migrations: {
    path: path.join(__dirname, 'packages/database/prisma/migrations'),
  },
  datasource: {
    url: env('DATABASE_URL'),
  },
})