express-uncapitalize

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express-uncapitalize

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An Express middleware module that will redirect user HTTP requests that contain uppercase letters, to the same URL in lowercase form.

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# This project is no longer maintained. [Here's an improved replacement](https://github.com/iZettle/express-lowercase-paths)

express-uncapitalize
====================

A quite simple Node.js/Express middleware module that will redirect user HTTP requests that contain uppercase letters, to the same URL in lowercase form, for parameter normalization and SEO purposes.

This is primarily to ensure that dynamic routes (using dynamic parameters, e.g. :username) will be interpreted in their lowercase form. Some would argue that user input should be normalized individually, but I found this to be a quicker, simpler  solution to writing code that normalizes individual URL parameters.

This is also good for SEO (by ensuring there is single canonical URL for all of your content). A 301 redirect is used to ensure that search engines are redirected to the lowercase, canonical version of your content.

[View this project on npmjs.org](https://npmjs.org/package/express-uncapitalize)

Example
-------

Say you have a route parameter, :username, in an Express route like so:

app.get('/user/:username', function(req, res){
        ...
    });

Using express-uncapitalize, a user visiting any of the following:

http://wonderfulnodeapp.org/user/BOB
    http://wonderfulnodeapp.org/User/bob
    http://wonderfulnodeapp.org/user/Bob
    
will now be 301 redirected to:

http://wonderfulnodeapp.org/user/bob
    
The final destination URL will be the canonical version to web crawlers (like search engines), and your :username param will always be lowercase without the need for additional normalization.

Installation
------------
    
    $ npm install express-uncapitalize

Usage
-----

Simply add the following line as a middleware in your Express app.configure:

app.use(require('express-uncapitalize')());

Where you add this this middleware to your configuration will vary what is interpreted and redirected. If placed before your static middleware, express-uncapitalize will redirect requests to your static content in addition to your routes:

app.configure(function(){
        app.set('views', __dirname + '/views');
        app.set('view engine', 'jade');
        app.use(express.bodyParser());
        app.use(express.methodOverride());
        app.use(require('express-uncapitalize')());
        app.use(require('stylus').middleware(__dirname + '/public'));
        app.use(express.static(__dirname + '/public'));
        app.use(app.router);
    });
    
I generally prefer to place after the static middleware to only redirect requests managed by the router, i.e. only the content where there is likely to be database lookups and case sensitivity matters:

app.configure(function(){
        app.set('views', __dirname + '/views');
        app.set('view engine', 'jade');
        app.use(express.bodyParser());
        app.use(express.methodOverride());
        app.use(require('stylus').middleware(__dirname + '/public'));
        app.use(express.static(__dirname + '/public'));
        app.use(require('express-uncapitalize')());
        app.use(app.router);
    });

Planned Features
----------------

This module is quite simple right now, and was really created to save time across many small projects I have. I plan to add conditional options in the future.

License 
-------

Licensed under the MIT license

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.

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