node-sample-api

A simple Node API with Knex and Express

This is a simple application made with Node.js, created as a learning experience. The application consists of a simple User CRUD API, using express to listen for different endpoints and Knex for database migrations. A MySQL database is set up through a docker-compose script, with a users and roles tables subsequently created a populated with dummy data.

The API handles User creation, updating and deletion by means of simple HTTP requests on dedicated routes.

Setup

The first is to clone this repository and create a container for a MySQL database. Please ensure you have Docker and docker-compose installed on your machine.

To set up the container, enter the following on your command line:

docker-compose up -d

That's it. The script will create a container with a MySQL database named sampledb with the default configuration found within the docker-compose.yml file. Use docker ps to list your currently running containers, and docker-compose down to stop them. Assuming the configs in the docker-compose file were not changed, you can access the database and directly executing SQL statements in your terminal by typing:

mysql -h localhost -P 3306 -u root -p sampledb --protocol=tcp

A default password is provided with the configs as well.

To set up the Node API, first install the dependencies:

yarn install

Use the following commands do create and populate tables through Knex:

yarn tables
yarn dummydata

To serve the API, enter:

yarn serve

Usage

Being a simple API, this application only a few routes:

(GET, POST) /users

GET requests will fetch all users from the database:

[
  {
    "id": 1,
    "username": "admin",
    "firstname": "foo",
    "lastname": "bar",
    "email": "[email protected]",
    "role_id": 1
  }
]

POST requests will create new users, requiring the necessary to be sent as JSON:

{
	"username": "johnnie",
	"firstname": "John",
	"lastname": "Doe",
	"email": "[email protected]",
	"role_id": 3
}

Valid role IDs are 1, 2 and 3, with a basic validation in place.

(PUT, DELETE) /users/:id

PUT requests will update data for a user with a given ID. As such, JSON data must be present:

{
	"username": "jane",
	"firstname": "Jannet",
	"lastname": "Doe",
	"email": "[email protected]",
	"role_id": 3
}

DELETE requests simply delete users based on their ID.

(GET) /

The base route will greet you:

{
  "message": "Hello from Node!"
}