express-router-es6.js

import {Router} 'express'

import {auth, logged} from 'actions/auth'
import {list, show} from 'actions/users'
import {render} from 'actions/common'

export default const router = Router()

router.use(auth)

router.get('/items', list, render('list'))
router.get('/items/new', logged, show, render('show'))
router.get('/items/:id', show, render('show'))



// actions/users/index.js
module.exports = {
  show: (req, res, next) => {
    User
    .findOne({username: req.params.username})
    .exec()
    .catch(next)
    .then(user => {
      res.locals.user = user
      next()
    })
  },

  list: (req, res, next) => {
    User
    .find()
    .order({createdAt: -1})
    .exec()
    .catch(next)
    .then(users => {
      res.locals.users = users
      next()
    })
  }
}

// actions/common/index.js
module.exports = {
  render: (name) => {
    return (req, res, next) => res.render(name)
  }
}

// actions/auth/index.js
module.exports = {
  auth: (req, res, next) => {
    res.locals.currentUser = req.user
    next()
  },

  logged: (req, res, next) => {
    if (req.user) return next()
    var err = new Error('Not authorised')
    err.status = 400
    next(err)
  }
}