koa-trie-router

Koa Trie Router

Trie routing for Koa based on routington.

Features

• OPTIONS support
• 405 Method Not Allowed support
• 501 Not Implemented support

Routes are generally orthogonal, so the order of definition generally doesn't matter. See routington for more details.

Installation

var app = require('koa')()
app.use(require('koa-trie-router')(app))

app.route('/')
.get(function* (next) {
  this.body = 'homepage'
})

app.post('/images', function* (next) {
  var image = yield* this.request.buffer('25mb')
})

API

this.assertImplementsMethod()

Checks if the server implements a particular method and throws a 501 error otherwise. This is not middleware, so you would have to use it in your own middleware.

app.use(myCustomErrorHandler)

app.use(function* (next) {
  this.request.assertImplementsMethod() // throws otherwise
  yield next
})

app.use(app.router)

Like Express, all routes belong to a single middleware. Unlike Express, app.router is not implicitly mounted. If you do not do app.use(app.router) ever, routing will never work.

app.route(paths)[method](middleware...)

paths can be a nested stack of string paths:

app.route('/one', [
  '/two',
  ['/three', '/four']
])

You can then chain [method](middleware...) calls.

app.route('/')
.get(function* (next) {

})
.post(function* (next) {

})
.patch(function* (next) {

})

app[method](paths, middleware...)

Similar to above, but you define paths as the first argument:

app.get([
  '/one',
  '/two'
], function* (next) {

})

this.params

this.params will be defined with any matched parameters.

app.get('/user/:name', function* (next) {
  var name = this.params.name
  var user = yield User.get(name)
  yield next
})

Path Definitions

For path definitions, see routington.

Usage

In trie-router, routes are orthogonal and strict. Unlike regexp routing, there's no wildcard routing and you can't next to the next matching route.

License

The MIT License (MIT)

Copyright (c) 2013 Jonathan Ong [e-mail]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.