expression-js

Sets up express-session using redis (connect-redis) Express-session stores session data on the server. A cookie with an ID identifies which session data to use.

Getting Started

• Download and install redis https://redis.io/download
• Install expression-js

npm install expression-js

Usage

Entry or index script

let express = require('express');
let app = express();
let session = require('expression-js');
session.initialize(app); //using the default options

Storing to session

app.get('/', (req, res, next) => {
    req.session.data = {
        username: 'Username',
        userID: 'userID',
        admin: true
    }
});

Reading from session

app.get('/path', (req, res, next) => {
    res.json({message: 'You are logged in ass'+req.session.data.username});
})

Options

Default options

 {
    allowAllOrigins: false,
    sessionOpts: {
        secret: "sectedballot",
        name: 'expression',
        cookie: {
            sameSite: false,
            maxAge: (3600000 * 24)
        },
        saveUninitialized: false,
        resave: true
    }

• allowAllOrigins if set to true, will rewrite the Access-Control-Allow-Origin to the requesting origin. It is required for the session to work over CORS.
• sessionOpts expression-session options.

Example

let express = require('express');
let app = express();
let session = require('expression-js'); // require expression js
let options = {
    allowAllOrigins: false,
    sessionOpts: {
        secret: "sectedballot",
        name: 'expression',
        cookie: {
            sameSite: false,
            maxAge: (3600000 * 24)
        },
        saveUninitialized: false,
        resave: true
    }
}
session.initialize(app, options); // initialize express to expression-js
app.get('/', (req, res, next) => {
    if (req.session && req.session.data) {
        res.json(req.session.data);
    } else {
        req.session.data = {
            session: 'Good one'
        }
        res.json({ message: 'Session started' });
    }
});
app.listen(3010, function() {
    console.info('running at 3010');
});