Changements dans les modules (nouvelle version Express, mysql, ..)
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node_modules/router/README.md
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node_modules/router/README.md
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# router
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[![NPM Version][npm-image]][npm-url]
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[![NPM Downloads][downloads-image]][downloads-url]
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[![Node.js Version][node-version-image]][node-version-url]
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[![Build Status][travis-image]][travis-url]
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[![Test Coverage][coveralls-image]][coveralls-url]
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Simple middleware-style router
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## Installation
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```bash
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$ npm install router
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```
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## API
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```js
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var finalhandler = require('finalhandler')
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var http = require('http')
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var Router = require('router')
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var router = Router()
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router.get('/', function (req, res) {
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end('Hello World!')
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})
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var server = http.createServer(function(req, res) {
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router(req, res, finalhandler(req, res))
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})
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server.listen(3000)
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```
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This module is currently an extracted version from the Express project,
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but with the main change being it can be used with a plain `http.createServer`
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object or other web frameworks by removing Express-specific API calls.
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## Router(options)
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Options
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- `strict` - When `false` trailing slashes are optional (default: `false`)
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- `caseSensitive` - When `true` the routing will be case sensitive. (default: `false`)
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- `mergeParams` - When `true` any `req.params` passed to the router will be
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merged into the router's `req.params`. (default: `false`) ([example](#example-using-mergeparams))
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Returns a function with the signature `router(req, res, callback)` where
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`callback([err])` must be provided to handle errors and fall-through from
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not handling requests.
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### router.use([path], ...middleware)
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Use the given middleware function for all http methods on the given `path`,
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defaulting to the root path.
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`router` does not automatically see `use` as a handler. As such, it will not
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consider it one for handling `OPTIONS` requests.
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* Note: If a `path` is specified, that `path` is stripped from the start of
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`req.url`.
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```js
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router.use(function (req, res, next) {
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// do your things
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// continue to the next middleware
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// the request will stall if this is not called
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next()
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// note: you should NOT call `next` if you have begun writing to the response
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})
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```
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### router\[method](path, ...[middleware], handler)
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The [http methods](https://github.com/jshttp/methods/blob/master/index.js) provide
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the routing functionality in `router`.
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These are functions which you can directly call on the router to register a new
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`handler` for the `method` at a specified `path`.
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```js
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// handle a `GET` request
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router.get('/', function (req, res) {
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end('Hello World!')
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})
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```
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Additional middleware may be given before the handler. These middleware behave
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exactly as normal with one exception: they may invoke `next('route')`.
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Calling `next('route')` bypasses the remaining middleware and handler for this
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route, passing the request on to the next route.
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### router.param(name, param_middleware)
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Maps the specified path parameter `name` to a specialized param-capturing middleware.
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This function positions the middleware in the same stack as `.use`.
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Parameter mapping is used to provide pre-conditions to routes
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which use normalized placeholders. For example a _:user_id_ parameter
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could automatically load a user's information from the database without
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any additional code:
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```js
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router.param('user_id', function (req, res, next, id) {
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User.find(id, function (err, user) {
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if (err) {
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return next(err)
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} else if (!user) {
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return next(new Error('failed to load user'))
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}
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req.user = user
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// continue processing the request
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next()
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})
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})
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```
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### router.route(path)
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Creates an instance of a single `Route` for the given `path`.
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(See `Router.Route` below)
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Routes can be used to handle http `methods` with their own, optional middleware.
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Using `router.route(path)` is a recommended approach to avoiding duplicate
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route naming and thus typo errors.
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```js
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var api = router.route('/api/')
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```
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## Router.Route(path)
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Represents a single route as an instance that can be used can be used to handle
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http `methods` with it's own, optional middleware.
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### route\[method](handler)
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These are functions which you can directly call on a route to register a new
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`handler` for the `method` on the route.
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```js
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// handle a `GET` request
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var status = router.route('/status')
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status.get(function (req, res) {
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end('All Systems Green!')
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})
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```
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### route.all(handler)
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Adds a handler for all HTTP methods to this route.
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The handler can behave like middleware and call `next` to continue processing
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rather than responding.
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```js
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router.route('/')
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.all(function (req, res, next) {
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next()
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})
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.all(check_something)
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.get(function (req, res) {
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end('Hello World!')
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})
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```
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## Examples
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```js
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// import our modules
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var http = require('http')
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var Router = require('router')
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var finalhandler = require('finalhandler')
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var compression = require('compression')
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var bodyParser = require('body-parser')
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// store our message to display
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var message = "Hello World!"
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// initialize the router & server and add a final callback.
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var router = Router()
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var server = http.createServer(function onRequest(req, res) {
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router(req, res, finalhandler(req, res))
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})
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// use some middleware and compress all outgoing responses
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router.use(compression())
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// handle `GET` requests to `/message`
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router.get('/message', function (req, res) {
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res.statusCode = 200
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end(message + '\n')
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})
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// create and mount a new router for our API
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var api = Router()
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router.use('/api/', api)
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// add a body parsing middleware to our API
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api.use(bodyParser.json())
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// handle `PATCH` requests to `/api/set-message`
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api.patch('/set-message', function (req, res) {
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if (req.body.value) {
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message = req.body.value
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res.statusCode = 200
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end(message + '\n')
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} else {
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res.statusCode = 400
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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res.end('Invalid API Syntax\n')
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}
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})
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// make our http server listen to connections
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server.listen(8080)
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```
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You can get the message by running this command in your terminal,
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or navigating to `127.0.0.1:8080` in a web browser.
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```bash
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curl http://127.0.0.1:8080
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```
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You can set the message by sending it a `PATCH` request via this command:
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```bash
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curl http://127.0.0.1:8080/api/set-message -X PATCH -H "Content-Type: application/json" -d '{"value":"Cats!"}'
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```
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### Example using mergeParams
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```js
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var http = require('http')
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var Router = require('router')
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var finalhandler = require('finalhandler')
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// this example is about the mergeParams option
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var opts = { mergeParams: true }
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// make a router with out special options
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var router = Router(opts)
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var server = http.createServer(function onRequest(req, res) {
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// set something to be passed into the router
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req.params = { type: 'kitten' }
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router(req, res, finalhandler(req, res))
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})
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router.get('/', function (req, res) {
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res.statusCode = 200
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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// with respond with the the params that were passed in
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res.end(req.params.type + '\n')
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})
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// make another router with our options
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var handler = Router(opts)
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// mount our new router to a route that accepts a param
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router.use('/:path', handler)
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handler.get('/', function (req, res) {
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res.statusCode = 200
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res.setHeader('Content-Type', 'text/plain; charset=utf-8')
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// will respond with the param of the router's parent route
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res.end(path + '\n')
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})
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// make our http server listen to connections
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server.listen(8080)
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```
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Now you can get the type, or what path you are requesting:
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```bash
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curl http://127.0.0.1:8080
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> kitten
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curl http://127.0.0.1:8080/such_path
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> such_path
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```
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## License
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[MIT](LICENSE)
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[npm-image]: https://img.shields.io/npm/v/router.svg
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[npm-url]: https://npmjs.org/package/router
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[node-version-image]: https://img.shields.io/node/v/router.svg
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[node-version-url]: http://nodejs.org/download/
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[travis-image]: https://img.shields.io/travis/pillarjs/router/master.svg
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[travis-url]: https://travis-ci.org/pillarjs/router
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[coveralls-image]: https://img.shields.io/coveralls/pillarjs/router/master.svg
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[coveralls-url]: https://coveralls.io/r/pillarjs/router?branch=master
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[downloads-image]: https://img.shields.io/npm/dm/router.svg
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[downloads-url]: https://npmjs.org/package/router
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