Instructions

Step 1

npm install -g prisma

Step 2

Install Docker and start Prisma and the connected database by running the following command:

docker-compose up -d

Step 3

To deploy the Prisma schema run:

prisma deploy

Playground of Prisma is available here: http://localhost:4466/

Step 4

To start the NestJS Server run:

npm run start

Playground for the NestJS Server is available here: http://localhost:3000/graphql

Update Schema

Prisma

Update the Prisma schema prisma/datamodel.prisma and after that run the following two commands:

prisma deploy

prisma deploy will update the database and for each deploy prisma generate is executed. This will generate the latest Prisma Client to access Prisma from your resolvers.

NestJS

Schema

Add or update the *.graphql schema with Queries or Mutations.

For example:

# Add user Query to user.graphql
type Query {
  ...
  user(id: ID): User
  ...
}

After starting NestJS this Query is available in the Playground, but will fail at the moment. This will be fixed in the next step. Add a new resolver function.

Resolver

To implement the new query, a new resolver function needs to be added to users.resolver.ts.

@Query('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.

Wang-Cankun/nestjs-prisma-starter