Error: req.flash() requires sessions

Question

I'm new to node and I'm pretty sure I've set up the middle ware and express to use flash messaging however I still get the error:

Error: req.flash() requires sessions

Setup

//express.js
     var flash = require('connect-flash')

     module.exports = function (app, config, passport) {
         app.use(flash());
     };

//route js
     exports.loginGet = function (req, res) {
       res.render('users/login', {
         title: 'Login',
         message: req.flash('error') //error in question
       });
     };

What else can I do to make sure I have everything set up correctly and get it working?

https://github.com/jaredhanson/connect-flash#express-3x. You need to use session middleware, thus the error message `req.flash() requires sessions` — andars, May 31 '15 at 22:40

andars · Accepted Answer · 2015-06-01T15:46:44.880

15

From the readme (emphasis mine):

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.

Using express-sessions with express 4, cookieParser is no longer required.

var session = require('express-session');

//...


app.use(session({ cookie: { maxAge: 60000 }, 
                  secret: 'woot',
                  resave: false, 
                  saveUninitialized: false}));

edited Jun 01 '15 at 15:46

answered May 31 '15 at 22:47

andars

1,384
7
12

isn't using express.XXX from express v2 and 3? I thought they removed this features from express and made them single middleware? – Jamie Hutber Jun 01 '15 at 09:09
My bad - you are correct. I have updated my answer accordingly. – andars Jun 01 '15 at 15:47

score 3 · Answer 2 · answered Aug 02 '19 at 18:57

In my case the issue was that Redis was not listening. I found that out by enabling the logErrors property:

new RedisStore({
  host: 'localhost',
  port: '6379',
  logErrors: true,
});

Which resulted in messages like these:

Warning: connect-redis reported a client error: Error: Redis connection to localhost:6379 failed - connect ECONNREFUSED 127.0.0.1:6379

score 2 · Answer 3 · answered Sep 22 '18 at 17:20

2

Please check mongodb connections. there may be an mongo error like "mongoError: Topology was destroyed". To fix this issue, check here

answered Sep 22 '18 at 17:20

Oni

1,093
11
16

This helped me fix the same error message caused by a misconfigured (wrong host name) using connect-redis session – Crisp Oct 22 '18 at 07:15

score 1 · Answer 4 · answered Apr 19 '21 at 12:56

1

i was having these issues and I solve them by respecting the cascading

app.use(passport.initialize());
app.use(passport.session());
//SESSION FLASH
app.use(flash());

answered Apr 19 '21 at 12:56

Ayoub Aarab

57
6

Error: req.flash() requires sessions

4 Answers4

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