Kokorone/.agents/skills/prisma-upgrade-v7/references/removed-features.md

Removed Features

Several features have been removed in Prisma v7. Here's how to migrate.

Client Middleware

Removed

// ❌ No longer works in v7
prisma.$use(async (params, next) => {
  const before = Date.now()
  const result = await next(params)
  const after = Date.now()
  console.log(`Query took ${after - before}ms`)
  return result
})

Use Client Extensions Instead

// ✅ v7 approach
const prisma = new PrismaClient({ adapter }).$extends({
  query: {
    $allModels: {
      async $allOperations({ operation, model, args, query }) {
        const before = Date.now()
        const result = await query(args)
        const after = Date.now()
        console.log(`${model}.${operation} took ${after - before}ms`)
        return result
      },
    },
  },
})

Common Middleware Patterns

Soft delete

const prisma = new PrismaClient({ adapter }).$extends({
  query: {
    user: {
      async delete({ args, query }) {
        // Convert delete to soft delete
        return prisma.user.update({
          where: args.where,
          data: { deletedAt: new Date() },
        })
      },
      async findMany({ args, query }) {
        // Filter out soft-deleted records
        args.where = { ...args.where, deletedAt: null }
        return query(args)
      },
    },
  },
})

Logging

const prisma = new PrismaClient({ adapter }).$extends({
  query: {
    $allModels: {
      async $allOperations({ operation, model, args, query }) {
        console.log(`${model}.${operation}`, JSON.stringify(args))
        return query(args)
      },
    },
  },
})

Metrics

Removed

The Metrics preview feature has been removed.

// ❌ No longer works
const metrics = await prisma.$metrics.json()

Alternatives

Custom counter with extensions

let totalQueries = 0

const prisma = new PrismaClient({ adapter }).$extends({
  client: {
    async $totalQueries() {
      return totalQueries
    },
  },
  query: {
    $allModels: {
      async $allOperations({ query, args }) {
        totalQueries += 1
        return query(args)
      },
    },
  },
})

// Usage
const count = await prisma.$totalQueries()

Use driver-level metrics

Access metrics from the underlying driver adapter.

CLI Flags Removed

--skip-generate

Removed from migrate dev and db push.

# v6
prisma migrate dev --skip-generate

# v7 - generate is not run automatically
prisma migrate dev
prisma generate  # Run explicitly if needed

Local verification with Prisma 7.6.0 showed no generated client files emitted by migrate dev or db push, even though some CLI help text still says migrate dev "trigger[s] generators".

--skip-seed

Removed from migrate dev. More importantly, Prisma v7 no longer auto-runs seeds during migrate dev or migrate reset, so seed explicitly when you need it.

# v6
prisma migrate dev --skip-seed

# v7 - seed is not run automatically
prisma migrate dev
prisma db seed  # Run explicitly if needed

--schema and --url from db execute

# v6
prisma db execute --file ./script.sql --url "$DATABASE_URL"

# v7 - configure in prisma.config.ts
prisma db execute --file ./script.sql

migrate diff Options

Removed	Replacement
--from-url	--from-config-datasource
--to-url	--to-config-datasource
--from-schema-datasource	--from-config-datasource
--to-schema-datasource	--to-config-datasource
--shadow-database-url	Configure in prisma.config.ts

Example

# v6
prisma migrate diff --from-url "$DATABASE_URL" --to-schema schema.prisma

# v7
prisma migrate diff --from-config-datasource --to-schema schema.prisma

Automatic Behaviors Removed

Auto-generate after migrate

# v7 workflow
prisma migrate dev --name add_field
prisma generate  # Must run explicitly

Auto-seed after migrate

# v7 workflow
prisma migrate reset --force
prisma db seed  # Must run explicitly

Prisma.validator

The prisma-client generator no longer exposes Prisma.validator. Use TypeScript's satisfies operator instead.

import { Prisma } from '../generated/prisma/client'

const userSelect = {
  id: true,
  email: true,
} satisfies Prisma.UserSelect

rejectOnNotFound

Removed in v5.0.0 (already deprecated).

// ❌ Removed
const prisma = new PrismaClient({
  rejectOnNotFound: true,
})

// ✅ Use OrThrow methods
const user = await prisma.user.findUniqueOrThrow({
  where: { id: 1 },
})

const user = await prisma.user.findFirstOrThrow({
  where: { email: 'test@example.com' },
})