allow-methods

Allow-Methods

Express/connect middleware to handle 405 errors, when a request method is not supported by your route or application.

Install

Install Allow-Methods with npm:

npm install allow-methods

Usage

var allowMethods = require('allow-methods');

allowMethods will return a middleware function that will error if the request method does not match one of the allowed methods. The error will have message and status properties which you can use.

It accepts two arguments. Firstly, an array of allowed methods:

allowMethods(['get', 'head', 'post']);

Secondly (optionally) a message which will be used in the error if the request message does not match:

allowMethods(['get', 'head'], 'Unsupported method');

Route-level

var express = require('express');
var app = express();

app
    .route('/example')
    // Only requests with a GET/HEAD method will continue
    .all(allowMethods(['get', 'head']))
    // Define GET handler
    .get(function () { ... });

If you want to do something useful with the error, for example output a sensible JSON response, you will need to define an error handler for your application (after the route definition):

app.use(function (err, req, res, next) {
    res.status(err.status || 500).send({
        message: err.message
    });
});

Application-level

var express = require('express');
var app = express();

// Only allow GET/HEAD methods across the entire application
app.use(allowMethods(['get', 'head']));

Contributing

To contribute to Allow-Methods, clone this repo locally and commit your code on a separate branch.

Please write unit tests for your code, and check that everything works by running the following before opening a pull-request:

make ci

License

Allow-Methods is licensed under the MIT license.
Copyright © 2015, Rowan Manning