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connect-flash-redis
Advanced tools
Readme
(extends connect-flash )
The flash is a special area of the session used for storing messages. Messages are written to the flash and cleared after being displayed to the user. The flash is typically used in combination with redirects, ensuring that the message is available to the next page that is to be rendered.
This middleware was extracted from Express 2.x, after Express 3.x removed direct support for the flash. connect-flash brings this functionality back to Express 3.x, as well as any other middleware-compatible framework or application. +1 for radical reusability.
It stores all the messages in Redis, so no care if user got multiple 302 redirections or got any unexpected error in packets. It persists until view doesn't read it well.
$ npm install connect-flash-redis
Flash messages are stored in the session. First, setup sessions as usual by
enabling cookieParser
and session
middleware. Then, use flash
middleware
provided by connect-flash.
var app = express();
app.configure(function() {
app.use(express.cookieParser('keyboard cat'));
app.use(express.session({ cookie: { maxAge: 60000 }}));
app.use(require('connect-flash')({
host: 'localhost',
port: 6379,
app: app
}));
});
We need access to the messages in our view. To do so, use this snippet after the initialization.
// This pushes flash messages to your view with the key `flash`
app.locals.flash = req.flash.bind(req);
From version 1.0.1
, we are now indexing messages by sessionId, so add this in your main:
app.locals.__csrf = app.locals.__csrf || 'thisismycsrfstringtovalidate';
With the flash
middleware in place, all requests will have a req.flash()
function
that can be used for flash messages.
app.get('/flash', function(req, res){
// Set a flash message by passing the key, followed by the value, to req.flash().
req.flash('info', 'Flash is back!')
res.redirect('/');
});
app.get('/', function(req, res){
res.render('index'});
});
Now, in your view, time to render them. Below example is in .ejs but good enough to understand :-)
<% flash(function(msgs) {
console.log(msgs); // Your message here. Do anything with it.
}) %>
Copyright (c) 2012-2013 Jared Hanson <http://jaredhanson.net/>
FAQs
Flash message middleware for Connect w/ Redis
The npm package connect-flash-redis receives a total of 3 weekly downloads. As such, connect-flash-redis popularity was classified as not popular.
We found that connect-flash-redis demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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