Attach `req.context` to all [express](https://github.com/visionmedia/express) requests.
npm install context-middleware Attach req.context to all express requests.
``js
var context = require('context-middleware');
var app = express();
app.use(context());
app.use('/user', function (req, res, next) {
var id = req.param('id');
users.get(id, function (err, user) {
req.context.user = user;
next();
});
});
`
Generate a context middleware.
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