如何使用Passport.js獲取當前會話的用戶名？

Question

如何在我已經可以通過routes.js訪問的路由users.js使用Passport的{user}參數？

這種情況是，我需要在多個新的路由文件中訪問Passport參數，因此不必將routes.js用戶作為包含我的所有應用程序路由的唯一文件。

app.js-我只隔離感興趣的部分

const express = require('express')
const session = require('express-session')
const cookieParser = require('cookie-parser')
const bodyParser = require('body-parser')
const passport = require('passport')
const flash = require('connect-flash')

const app = express()

app.use(session({
    secret: 'stackoverflow',
    resave: true,
    saveUninitialized: true,
})) 
app.use(passport.initialize())
app.use(passport.session()) 
app.use(flash()) 

const index = require('./routes/index')
const users = require('./routes/users')

require('./config/passport')(passport)

// I believe that (app, passport) enables the routes.js to have access to {user} parameter
require('./routes/routes.js')(app, passport) 
// load  routes and pass in our app and fully configured passport

app.use('/', index)
app.use('/users', users)

module.exports = app;

functions.js-我的全局函數文件

const express = require('express')
const router = express.Router()
const db = require('../db/Conf')

module.exports.isLoggedIn = function isLoggedIn(req, res, next) {
    if (req.isAuthenticated()) return next()
    res.redirect('/notloggedin')
}

module.exports.fdb = function fdb(mypar, callback) {
    // some stuff for querying
}

routes.js-這里的{user}參數輸出其值沒有問題

const fcs = require('../routes/functions')
module.exports = (app, passport) => {

    app.get('/login', (req, res) => {
        res.render('login.ejs', { message: req.flash('loginMessage') })
    });

    app.post('/login', passport.authenticate('local-login', {
        //login stuff
    });

    app.get('/profile', fcs.isLoggedIn, ({ user }, res) => {
        res.render('profile.ejs', {user})

        // gets the user out of session and pass to template which is OK
        console.log('User is: ', user.username) 
    });
};

users.js- >我希望能夠使用Passport的{user}參數的路線，我已經可以在route.js中獲得該參數

const express = require('express')
const router = express.Router()
const db = require('../db/Conf')
const fcs = require('../routes/functions')

router.get('/', fcs.isLoggedIn, function(req, res, {user}) {
    // some mysql querying stuff using my function fcs.fdb

    res.render('users')

    // Undefined -> Trying to get the {user} value through Passport
    console.log(user.username)

})

module.exports = router

基於https://github.com/RosieCode95/node-express-passport-mysql

Answer 1

您只需要使用req.user.username而不是user.username即可訪問當前會話的Passport.js用戶名值。

另外，您在router.get函數（ users.js路由文件）中不需要{user}參數。

router.get('/', fcs.isLoggedIn, function(req, res) {

    res.render('users')
    console.log(req.user.username)

})

Answer 2

試試const router = express.Router({mergeParams: true}); 。 在Express中，默認情況下無法訪問父級的路由參數。