How do you integrate Prisma into a NestJS application?

Q: How do you integrate Prisma into a NestJS application?

// npm i prisma @prisma/client && npx prisma init // prisma/schema.prisma datasource db { provider = "postgresql" url = env("DATABASE_URL") } model User { id Int @id @default(autoincrement()) email String @unique name String? posts Post[] createdAt DateTime @default(now()) } // PrismaService — wraps PrismaClient with lifecycle hooks @Injectable() export class PrismaService extends PrismaClient implements OnModuleInit { async onModuleInit() { await this.$connect(); } } // Global module — provide once, inject everywhere @Global() @Module({ providers: [PrismaService], exports: [PrismaService], }) export class PrismaModule {} // Service — inject and use @Injectable() export class UsersService { constructor(private prisma: PrismaService) {} findAll() { return this.prisma.user.findMany(); } findOne(id: number) { return this.prisma.user.findUniqueOrThrow({ where: { id } }); } } PrismaService extends PrismaClient — all Prisma query methods are available directly on the service. OnModuleInit.$connect() establishes the connection pool on app startup. Mark PrismaModule as @Global() so PrismaService is available app-wide without individual module imports. Run npx prisma generate after every schema change to regenerate the typed client. Use findUniqueOrThrow() instead of findUnique() to get a typed error when the record is not found.

Difficulty: 5/10

Prisma module integration, schema migrations, transaction management

Install prisma and @prisma/client, define models in prisma/schema.prisma, then create a PrismaService that extends PrismaClient and implements OnModuleInit to call $connect(). Register it as a global provider so every module can inject it without importing a module.

Prisma schema, PrismaService, and global module

Prisma integration checklist:

1
PrismaService extends PrismaClient — all Prisma query methods are available directly on the service.
2

How do you integrate Prisma into a NestJS application?

Difficulty: 5/10

Prisma module integration, schema migrations, transaction management

Install prisma and @prisma/client, define models in prisma/schema.prisma, then create a PrismaService that extends PrismaClient and implements OnModuleInit to call $connect(). Register it as a global provider so every module can inject it without importing a module.

Prisma schema, PrismaService, and global module

Prisma integration checklist:

1
PrismaService extends PrismaClient — all Prisma query methods are available directly on the service.
2

How do you integrate Prisma into a NestJS application?

Install prisma and @prisma/client, define models in prisma/schema.prisma, then create a PrismaService that extends PrismaClient and implements OnModuleInit to call $connect(). Register it as a global provider so every module can inject it without importing a module.

How do you integrate Prisma into a NestJS application?

Install prisma and @prisma/client, define models in prisma/schema.prisma, then create a PrismaService that extends PrismaClient and implements OnModuleInit to call $connect(). Register it as a global provider so every module can inject it without importing a module.

Scenario Questions

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