How to validate non-empty fields with Node and Passport? - node.js

Question

I need to validate non-empty fields for a login (post request), but I get this error:
TypeError: req.checkBody is not a function
at D:\IDoo projects\ExpressGenerado\config\routes.js:76:9
This is my route file:
app.post('/login',function(req,res){
req.checkBody('email', 'Email is required').notEmpty();
req.checkBody('password', 'Password is required').notEmpty();
var errors = req.validationErrors();
if (errors) {
res.render('signup',{message: req.flash('loginMessage')});
}
else{
passport.authenticate('local-login', {
successRedirect : '/profile', // redirect to the secure profile section
failureRedirect : '/login', // redirect back to the signup page if there is an error
failureFlash : true // allow flash messages
})(req,res);
}
});
And my entry point app file, after adding app.use(expressValidator) my web hangs up and doesn't validate, it does nothing:
var express = require('express');
var expressValidator = require ('express-validator');
var app = express();
var multer = require('multer')
var constants = require('constants');
var constant = require('./config/constants');
var port = process.env.PORT || 8042;
var passport = require('passport');
var flash = require('connect-flash');
var path = require('path');
var morgan = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var dateFormat = require('dateformat');
var now = new Date();
app.use(expressValidator);
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
require('./config/passport')(passport); // pass passport for configuration
app.use(morgan('dev')); // log every request to the console
app.use(cookieParser()); // read cookies (needed for auth)
app.use(express.static(path.join(__dirname, 'public')));
app.set('views', path.join(__dirname, 'app/views'));
app.set('view engine', 'ejs');
app.use(session({ secret: 'zomaareenstukjetekstDatjenietzomaarbedenkt' }));
app.use(passport.initialize());
app.use(passport.session()); // persistent login sessions
app.use(flash()); // use connect-flash for flash messages stored in session
require('./config/routes.js')(app, passport); // load our routes and pass in our app and fully configured passport
app.listen(port);
console.log('The magic happens on port ' + port);

Answer 1

You're doing this:
app.use(expressValidator);
However, expressValidator is a function that returns a middleware function, so you need to use it like this:
app.use(expressValidator());