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docs: Update seeding example to require adapter in Prisma ORM v7 #7471

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21 changes: 18 additions & 3 deletions apps/docs/content/docs/orm/prisma-migrate/workflows/seeding.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -68,9 +68,20 @@ model Post {

Create some new users and posts in your `prisma/seed.ts` file:

:::info[Prisma ORM v7 requirement]
In Prisma ORM v7, `PrismaClient` must be initialized with a driver adapter. The example below uses `@prisma/adapter-pg` with a PostgreSQL connection pool.
:::

```js title="seed.ts"
import "dotenv/config";
import { Pool } from "pg";
import { PrismaPg } from "@prisma/adapter-pg";
import { PrismaClient } from "../prisma/generated/client";
const prisma = new PrismaClient();

const connectionString = `${process.env.DATABASE_URL}`;
const pool = new Pool({ connectionString });
const adapter = new PrismaPg(pool);
const prisma = new PrismaClient({ adapter });
async function main() {
const alice = await prisma.user.upsert({
where: { email: "alice@prisma.io" },
Expand Down Expand Up @@ -114,18 +125,20 @@ async function main() {
main()
.then(async () => {
await prisma.$disconnect();
await pool.end();
})
.catch(async (e) => {
console.error(e);
await prisma.$disconnect();
await pool.end();
process.exit(1);
});
```

- Add `typescript`, `tsx` and `@types/node` development dependencies:
- Add `typescript`, `tsx`, `@types/node`, `@prisma/adapter-pg`, `pg`, `@types/pg` and `dotenv` development dependencies:

```npm
npm install -D typescript tsx @types/node
npm install -D typescript tsx @types/node @prisma/adapter-pg pg @types/pg dotenv
```

- Add the `seed` field to your `prisma.config.ts` file:
Expand Down Expand Up @@ -176,10 +189,12 @@ main()
.then(rawSql)
.then(async () => {
await prisma.$disconnect();
await pool.end();
})
.catch(async (e) => {
console.error(e);
await prisma.$disconnect();
await pool.end();
process.exit(1);
});
```
Expand Down