The express-notices module provides a simple middleware for throwing high-level error, warning and information messages.
Works best with client-side frameworks (e.g. ScalpelJS).
Install it:
npm install express-notices
Configure your app to use notices (somewhere above your main router, but below session configuration):
// Your session configuration
// ...
app.use(require('express-notices'));
// ...
app.use(express.router);
This installs notices object into:
resto use it inside routesres.localsto access it in your templates
In your routes:
app.get('/login', function(req, res, next) {
res.render('login');
});
app.post('/login', function(req, res, next) {
// Check password
if (!valid) {
res.notices.error('You have entered invalid username and password.');
res.redirect('/login');
} else {
// Authenticate the user
// ...
}
})
And in your templates:
// ...
body
#notices
each notice in notices.get()
div(class="notice #{notice.kind}")= notice.msg
Just apply some styling with CSS and you're all set.
Pass parameters like this:
res.notices.info('Your request have been processed.');
res.notices.warn('The email %s has already been taken.', email);
res.notices.error('Start date %s is greated than end date %s.', startDate, endDate);
If you aren't satisfied with default notice levels — info, warn and error — you can add more:
app.use(require('express-notices').extend({
goldAdd: function(amount) {
return this.add('gold', 'You have earned %s gold coins.', amount);
},
goldRemove: function(amount) {
return this.add('gold', 'You have lost %s gold coins.', amount);
}
}));
express-notices uses i18n-2 for formatting your messages. If you don't use it, it just formats string using sprintf.
Copyright (C) 2013 Boris Okunskiy boris@okunskiy.name (MIT license)
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