Files
Kokorone/.agents/skills/prisma-cli/references/db-seed.md
T
Jeffery f44200f543 feat: 完成 B 群組 — 資料層與核心領域模型
- 導入 Prisma 7.9.1 + SQLite(better-sqlite3 driver adapter),prisma.config.ts 管理連線設定
- 完整資料模型:User/Work/Character/CharacterAlias/EpisodicMemory/SemanticMemory/
  ProceduralRule/EmotionState/Relationship/SentimentLedgerEntry
- packages/db:Prisma Client 存取層(ESM,因 Prisma 7 產出的 generated client 僅支援 ESM)
- apps/api 隨之改為 ESM 以相容 packages/db
- packages/shared:新增角色/記憶/情緒/關係共用型別,api 與 web 皆從此匯入
- prisma/seed.ts:建立測試使用者與元氣型測試角色,含完整關係帳本與記憶種子資料
- apps/api:新增 GET /characters
- scripts/smoke/B.mjs:驗證資料表齊全、API 讀出種子角色、關係與記憶可寫入讀出
- 保留 Prisma 官方隨 CLI 附的 agent skill 文件(.agents/skills 等),供後續群組查閱

npm run restart && npm run smoke -- B 皆通過(B-V),A 群組冒煙測試無回歸。
2026-08-13 09:43:15 +08:00

3.2 KiB

prisma db seed

Runs your database seed script to populate data.

Command

prisma db seed [options]

What It Does

  • Executes your configured seed script
  • Populates database with initial/test data
  • Runs independently (not auto-run by migrations in v7)

Options

Option Description
--config Custom path to your Prisma config file
-- Pass custom arguments to seed script

Configuration

Configure seed script in prisma.config.ts:

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

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

Common seed commands

// TypeScript with tsx
seed: 'tsx prisma/seed.ts'

// TypeScript with ts-node
seed: 'ts-node prisma/seed.ts'

// JavaScript
seed: 'node prisma/seed.js'

Seed Script Example

// prisma/seed.ts
import { PrismaClient } from '../generated/client'

const prisma = new PrismaClient()

async function main() {
  // Create users
  const alice = await prisma.user.upsert({
    where: { email: 'alice@prisma.io' },
    update: {},
    create: {
      email: 'alice@prisma.io',
      name: 'Alice',
      posts: {
        create: {
          title: 'Hello World',
          published: true,
        },
      },
    },
  })

  const bob = await prisma.user.upsert({
    where: { email: 'bob@prisma.io' },
    update: {},
    create: {
      email: 'bob@prisma.io',
      name: 'Bob',
    },
  })

  console.log({ alice, bob })
}

main()
  .then(async () => {
    await prisma.$disconnect()
  })
  .catch(async (e) => {
    console.error(e)
    await prisma.$disconnect()
    process.exit(1)
  })

Examples

Run seed

prisma db seed

With custom arguments

prisma db seed -- --environment development

Arguments after -- are passed to your seed script.

Current Workflow

Run seeding explicitly after migrations when you need seed data:

prisma migrate dev --name init
prisma generate
prisma db seed  # Must run explicitly

Idempotent Seeding

Use upsert to make seeds re-runnable:

// Good: Can run multiple times
await prisma.user.upsert({
  where: { email: 'alice@prisma.io' },
  update: {},  // Don't change existing
  create: { email: 'alice@prisma.io', name: 'Alice' },
})

// Bad: Fails on second run
await prisma.user.create({
  data: { email: 'alice@prisma.io', name: 'Alice' },
})

Common Patterns

Development reset

prisma migrate reset --force
prisma db seed

Conditional seeding

// prisma/seed.ts
const count = await prisma.user.count()
if (count === 0) {
  // Only seed if empty
  await seedUsers()
}

Environment-specific seeds

// prisma/seed.ts
const env = process.env.NODE_ENV || 'development'

if (env === 'development') {
  await seedDevData()
} else if (env === 'test') {
  await seedTestData()
}

Best Practices

  1. Use upsert for idempotent seeds
  2. Keep seeds focused and minimal
  3. Use realistic but fake data
  4. Document required seed data
  5. Version control your seed scripts