Koa example/boilerplate

This repository demonstrates the usage of Sequelize within an Koa application.

Starting App

First of all, don’t forget to edit /config/config.js, create database then run:

npm install
npm start

This will start the application and create database tables.
Just open http://localhost:3000.

Sequelize Setup

Now we will install all sequelize related modules.

# install ORM , CLI and SQLite dialect
npm install --save sequelize sequelize-cli mysql2
# generate models
node_modules/.bin/sequelize init
node_modules/.bin/sequelize model:generate --name User --attributes firstName:string,lastName:string,email:string

Authentication

There is several authentication strategies available. You can use which one you want and remove those you don’t want.

Available strategies:

• local
• google
• twitter
• facebook

For routes you want to be accessable only by authenticated users, authenticated middleware can be used like:

router.get('/authenticated-route', authenticated(), async (ctx, next) => {
  ctx.body = 'You are logged in'
})

Authenticated middleware is in /utils/index.js

Database Relationships

For demonstrating ORM relationship, Post model created. The relationship is between users and posts like”

  Post.belongsTo(User, {as: 'Author'})

You can find examples of relationship when creating new post, which each post will be associated to a user and also in route /posts/user-posts/ which gets all posts of logged in user.