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Gardien is a NodeJS module that allows you to have fine rights management in your NodeJS applications and in your web browser. This module has a system of plugins to choose the type of database that will be used to save users, roles and permissions.

var async = require('async')
var Gardien = require('gardien')
 
// Setting Redis Driver 
var driver = new Gardien.drivers.RedisDriver({
    prefix: 'gardien',
    separator: ':',
    index: 0,
    options: {}
})
 
// Setting an Seraphin to get user rules 
var seraphin = new Gardien.Seraphin( driver, {
    debug: true
})
 
// Setting an Cherubin to check user's permissions 
var cherubin = new Gardien.Cherubin( {
    debug: true
})
 
// Setting user id 
var userId = 'oothkoo'
 
async.series(
    [
        function (cb) {
            // Seraphin initialization 
            seraphin.init(function (err) {
                cb(null)
            })
        },
        function (cb) {
            // Retrieve all user (oothkoo) rules 
            seraphin.getAllUserRules(userId, function (rules) {
            
                // Give all rules to our cherubin 
                cherubin.updateRules( rules )
                console.log('rules', rules)
                cb(null)
            })
        }
    ],
    function (err, results) {
        // Check if (oothkoo) is allowed to view humans across his all roles 
        console.log('allowed: ' + cherubin.isAllowed(userId, ['*'], ['human'], ['view']) )
    }
)