Starter template for 😻 NestJS and Prisma.
Checkout NestJS Prisma Schematics to automatically add Prisma support to your Nest application.
| Branch | Nest | Prisma | Graphql |
|---|---|---|---|
| main | v9 | v4 | Code-first |
| nest-8-prisma-3 | v8 | v3 | Code-first |
| nest-7 | v7 | v2 | Code-first |
| nest-6-prisma2-code-first | v6 | v2-preview | Code-first |
| nest-6-code-first | v6 | v1 | Code-first |
| nest-6-sdl-first | v6 | v1 | SDL First |
| nest-5 | v5 | v1 | SDL First |
- GraphQL w/ playground
- Code-First w/ decorators
- Prisma for database modelling, migration and type-safe access (Postgres, MySQL & MongoDB)
- 🔐 JWT authentication w/ passport-jwt
- REST API docs w/ Swagger
- Instructions
Install Nestjs CLI to start and generate CRUD resources
# npm
npm i -g @nestjs/cli
# yarn
yarn add -g @nestjs/cliInstall the dependencies for the Nest application:
# npm
npm install
# yarn
yarn installSetup a development PostgreSQL with Docker. Copy .env.example and rename to .env - cp .env.example .env - which sets the required environments for PostgreSQL such as POSTGRES_USER, POSTGRES_PASSWORD and POSTGRES_DB. Update the variables as you wish and select a strong password.
Start the PostgreSQL database
docker-compose -f docker-compose.db.yml up -d
# or
npm run docker:dbPrisma Migrate is used to manage the schema and migration of the database. Prisma datasource requires an environment variable DATABASE_URL for the connection to the PostgreSQL database. Prisma reads the DATABASE_URL from the root .env file.
Use Prisma Migrate in your development environment to
- Creates
migration.sqlfile - Updates Database Schema
- Generates Prisma Client
npx prisma migrate dev
# or
npm run migrate:devIf you like to customize your migration.sql file run the following command. After making your customizations run npx prisma migrate dev to apply it.
npx prisma migrate dev --create-only
# or
npm run migrate:dev:createIf you are happy with your database changes you want to deploy those changes to your production database. Use prisma migrate deploy to apply all pending migrations, can also be used in CI/CD pipelines as it works without prompts.
npx prisma migrate deploy
# or
npm run migrate:deployPrisma Client JS is a type-safe database client auto-generated based on the data model.
Generate Prisma Client JS by running
Note: Every time you update schema.prisma re-generate Prisma Client JS
npx prisma generate
# or
npm run prisma:generateExecute the script with this command:
npm run seedRun Nest Server in Development mode:
npm run start
# watch mode
npm run start:devRun Nest Server in Production mode:
npm run start:prodGraphQL Playground for the NestJS Server is available here: http://localhost:3000/graphql
Open up the example GraphQL queries and copy them to the GraphQL Playground. Some queries and mutations are secured by an auth guard. You have to acquire a JWT token from signup or login. Add the accessTokenas followed to HTTP HEADERS in the playground and replace YOURTOKEN here:
{
"Authorization": "Bearer YOURTOKEN"
}RESTful API documentation available with Swagger.
Nest server is a Node.js application and it is easily dockerized.
See the Dockerfile on how to build a Docker image of your Nest server.
Now to build a Docker image of your own Nest server simply run:
# give your docker image a name
docker build -t <your username>/nest-prisma-server .
# for example
docker build -t nest-prisma-server .After Docker build your docker image you are ready to start up a docker container running the nest server:
docker run -d -t -p 3000:3000 --env-file .env nest-prisma-serverNow open up localhost:3000 to verify that your nest server is running.
When you run your NestJS application in a Docker container update your .env file
- DB_HOST=localhost
# replace with name of the database container
+ DB_HOST=postgres
# Prisma database connection
+ DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DB_HOST}:${DB_PORT}/${POSTGRES_DB}?schema=${DB_SCHEMA}&sslmode=preferIf DATABASE_URL is missing in the root .env file, which is loaded into the Docker container, the NestJS application will exit with the following error:
(node:19) UnhandledPromiseRejectionWarning: Error: error: Environment variable not found: DATABASE_URL.
--> schema.prisma:3
|
2 | provider = "postgresql"
3 | url = env("DATABASE_URL")You can also setup a the database and Nest application with the docker-compose
# building new NestJS docker image
docker-compose build
# or
npm run docker:build
# start docker-compose
docker-compose up -d
# or
npm run dockerUpdate the Prisma schema prisma/schema.prisma and after that run the following two commands:
npx prisma generate
# or in watch mode
npx prisma generate --watch
# or
npm run prisma:generate
npm run prisma:generate:watchThe schema.graphql is generated with code first approach from the models, resolvers and input classes.
You can use class-validator to validate your inputs and arguments.
To implement the new query, a new resolver function needs to be added to users.resolver.ts.
@Query(returns => User)
async getUser(@Args() args): Promise<User> {
return await this.prisma.client.user(args);
}Restart the NestJS server and this time the Query to fetch a user should work.
A GraphQL client is necessary to consume the GraphQL api provided by the NestJS Server.
Checkout Apollo a popular GraphQL client which offers several clients for React, Angular, Vue.js, Native iOS, Native Android and more.
To start using Apollo Angular simply run in an Angular and Ionic project:
ng add apollo-angularHttpLink from apollo-angular requires the HttpClient. Therefore, you need to add the HttpClientModule to the AppModule:
imports: [BrowserModule,
HttpClientModule,
...,
GraphQLModule],You can also add the GraphQLModule in the AppModule to make Apollo available in your Angular App.
You need to set the URL to the NestJS GraphQL Api. Open the file src/app/graphql.module.ts and update uri:
const uri = 'http://localhost:3000/graphql';To use Apollo-Angular you can inject private apollo: Apollo into the constructor of a page, component or service.
To execute a query you can use:
this.apollo.query({query: YOUR_QUERY});
# or
this.apollo.watchQuery({
query: YOUR_QUERY
}).valueChanges;Here is an example how to fetch your profile from the NestJS GraphQL Api:
const CurrentUserProfile = gql`
query CurrentUserProfile {
me {
id
email
name
}
}
`;
@Component({
selector: 'app-home',
templateUrl: 'home.page.html',
styleUrls: ['home.page.scss'],
})
export class HomePage implements OnInit {
data: Observable<any>;
constructor(private apollo: Apollo) {}
ngOnInit() {
this.data = this.apollo.watchQuery({
query: CurrentUserProfile,
}).valueChanges;
}
}Use the AsyncPipe and SelectPipe to unwrap the data Observable in the template:
<div *ngIf="data | async | select: 'me' as me">
<p>Me id: {{me.id}}</p>
<p>Me email: {{me.email}}</p>
<p>Me name: {{me.name}}</p>
</div>Or unwrap the data using RxJs.
This will end up in an GraphQL error because Me is protected by an @UseGuards(GqlAuthGuard) and requires an Bearer TOKEN.
Please refer to the Authentication section.
To execute a mutation you can use:
this.apollo.mutate({
mutation: YOUR_MUTATION,
});Here is an example how to login into your profile using the login Mutation:
const Login = gql`
mutation Login {
login(email: "[email protected]", password: "pizzaHawaii") {
token
user {
id
email
name
}
}
}
`;
@Component({
selector: 'app-home',
templateUrl: 'home.page.html',
styleUrls: ['home.page.scss'],
})
export class HomePage implements OnInit {
data: Observable<any>;
constructor(private apollo: Apollo) {}
ngOnInit() {
this.data = this.apollo.mutate({
mutation: Login,
});
}
}To execute a subscription you can use:
this.apollo.subscribe({
query: YOUR_SUBSCRIPTION_QUERY,
});To authenticate your requests you have to add your TOKEN you receive on signup and login mutation to each request which is protected by the @UseGuards(GqlAuthGuard).
Because the apollo client is using HttpClient under the hood you are able to simply use an Interceptor to add your token to the requests.
Create the following class:
import { Injectable } from '@angular/core';
import {
HttpEvent,
HttpInterceptor,
HttpHandler,
HttpRequest,
} from '@angular/common/http';
import { Observable } from 'rxjs';
@Injectable()
export class TokenInterceptor implements HttpInterceptor {
constructor() {}
intercept(
req: HttpRequest<any>,
next: HttpHandler
): Observable<HttpEvent<any>> {
const token = 'YOUR_TOKEN'; // get from local storage
if (token !== undefined) {
req = req.clone({
setHeaders: {
Authorization: `Bearer ${token}`,
},
});
}
return next.handle(req);
}
}Add the Interceptor to the AppModule providers like this:
providers: [
...
{ provide: HTTP_INTERCEPTORS, useClass: TokenInterceptor, multi: true },
...
]After you configured the Interceptor and retrieved the TOKEN from storage your request will succeed on resolvers with @UseGuards(GqlAuthGuard).
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