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Sub-routes

Separate files for routes​

Define a router​

  • Create folder routes/
  • Create file articles.js
  • import express.Router()
  • express router has same capabilities as express app but cannot listen to port
  • Add routes
  • export router
articles.js
const express = require('express')

const router = express.Router()

// is equivalent to '/articles'
router.get('/', (req, res) => {
    res.send('Articles!')
})

// is equivalent to '/articles/:id'
router.get('/:id', (req, res) => {
    res.send(`Article ${req.params.id}`)
})

module.exports = router

Register route in main router​

  • Import routes in app.js
  • Register /articles route using app.use()
app.js

const articleRoutes = require('./routes/articles')

// Middleware
app.use('/articles', articleRoutes)

Router Verb Methods​

  • Use router.route() method and chain get(), post(), put() and delete() for clean code structure
articles.js
const express = require('express')

const router = express.Router()

// /articles
router
  .route('/')
  .get((req, res) => {
    res.send('Get All Articles!')
    })
  .post((req, res) => {
    res.send('Create new Article!')
    })

// /article/id
router
  .route('/:id')
  .get((req, res) => {
    res.send('Get Article by Id!')
    })
  .put((req, res) => {
    res.send('Update Article by Id!')
    })
  .delete((req, res) => {
    res.send('Delete Article by Id!')
    })

module.exports = router