From c17d236f5b1ed3fe0ff75f76cbc209b2a7f91c36 Mon Sep 17 00:00:00 2001
From: yuki kageyama <kageyamaforwork@gmail.com>
Date: Tue, 17 Feb 2026 13:10:32 +0900
Subject: [PATCH] docs(docs): update seeding example to require adapter in
 Prisma ORM v7

In Prisma ORM v7, PrismaClient must be initialized with a driver adapter.
Without it, running `prisma db seed` throws PrismaClientInitializationError.

- Add adapter initialization using @prisma/adapter-pg and pg Pool
- Add pool.end() in success and error handlers to prevent process hanging
- Update dev dependency install command to include adapter packages
- Add info callout explaining the v7 requirement
---
 .../orm/prisma-migrate/workflows/seeding.mdx  | 21 ++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/apps/docs/content/docs/orm/prisma-migrate/workflows/seeding.mdx b/apps/docs/content/docs/orm/prisma-migrate/workflows/seeding.mdx
index 9365b5b436..d95b2bfa4f 100644
--- a/apps/docs/content/docs/orm/prisma-migrate/workflows/seeding.mdx
+++ b/apps/docs/content/docs/orm/prisma-migrate/workflows/seeding.mdx
@@ -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 = `${process.env.DATABASE_URL}`;
+const pool = new Pool({ connectionString });
+const adapter = new PrismaPg(pool);
+const prisma = new PrismaClient({ adapter });
 async function main() {
   const alice = await prisma.user.upsert({
     where: { email: "alice@prisma.io" },
@@ -114,18 +125,20 @@ async function main() {
 main()
   .then(async () => {
     await prisma.$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:
@@ -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);
   });
 ```