Install Nestjs CLI to start and generate CRUD resources

npm i -g @nestjs/cli

Install the dependencies for the Nest application:

npm install

copy vars of .env.example to .env 

Prisma 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

1. Creates migration.sql file
2. Updates Database Schema
3. Generates Prisma Client

npx prisma migrate dev
# or
npm run migrate:dev

If 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:create

If 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:deploy

Prisma 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:generate

Run Nest Server in Development mode:

npm run start

# watch mode
npm run start:dev

Run Nest Server in Production mode:

npm run start:prod

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

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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.

Update 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:watch