req flash not showing messages with passport js - node.js

using the express-flash package together with passportjs, and I want to flash messages to a user.
App.js
const createError = require('http-errors');
const express = require('express');
const path = require('path');
const cookieParser = require('cookie-parser');
const sessions = require('express-session');
const passport = require('passport');
const passportInit = require('./config/passport');
const sessionStoreSQL = require('express-mysql-session')(sessions);
const logger = require('morgan');
const flash = require('express-flash');
const favicon = require('serve-favicon');
const app = express();
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('dev'));
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')))
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(cookieParser('keyboard cat'));
app.use(express.static(path.join(__dirname, 'public')));
app.use(sessions({
genid: (req) => {
return uuid.v1();
},
secret:'-----',
resave:false,
saveUninitialized:false,
store:sessionStore
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(flash());
passportInit(passport,userModel);
require('./routes/index')(app,passport);
require('./server/API/get')(app);
I use a custom middle ware function to map my errors to, so I can access all of them in my templates
app.get('*', function(req,res,next){
res.locals.successes = req.flash('success');
res.locals.errors = req.flash('error');
res.locals.warnings = req.flash('warning');
next();
});
Passport.js
passport.use('local-login', new localStategy({passReqToCallback:true},function (req,username,password,done){
const isValidPassword = (userpass,password) => {
return bcrypt.compareSync(password,userpass);
}
Model.findOne({
where:{
'username':username,
},
}).then(function(user){
if(!user) return done(null,false,req.flash('warning','User does not exist'));
if(!isValidPassword(user.password,password)) return done(null,false,req.flash('error','Incorrect password'));
return done(null, user);
}).catch(err => console.log(err));
}))
Here is where I flash messages to the user.
Then I have a EJS component that handles al my alerts
Alerts.ejs
<% if (errors.lenght > 0) { %>
<div class='header alert alert-danger alert-dismissible'>
<strong><i class="fa fa-exclamation-circle"></i> ERROR:</strong> <%- errors.message %>
<i class='fa fa-times'></i>
</div>
<% } %>
<% if (successes.lenght > 0 ) { %>
<div class='header alert alert-success alert-dismissible'>
<strong><i class="fa fa-check-circle"></i> Success!</strong> <%- successes.message %>
<i class='fa fa-times'></i>
</div>
<% } %>
<% if (warnings.lenght > 0) { %>
<div class='header alert alert-warning alert-dismissible'>
<strong><i class="fa fa-check-circle"></i> Warning:</strong> <%- warnings.message %>
<i class='fa fa-times'></i>
</div>
<% } %>
This is then included in my templates e.g login and register like so
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title><%= title %> </title>
<% include components/header.ejs %>
</head>
<body>
<% include components/navbar.ejs %>
<div class="container-fluid">
<% include components/alerts.ejs %>
<div class="row justify-content-center">
<div class="col-auto">
<form method="POST" action="/login">
<div class="form-group">
<label for="login-username">Username</label>
<input name="username" type="text" class="form-control" id="loginUsername"
aria-describedby="emailHelp" placeholder="Enter Username">
</div>
<div class="form-group">
<label for="login-password">Password</label>
<input name="password" type="password" class="form-control" id="loginPassword"
placeholder="Password">
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</div>
</div>
</body>
<% include components/scripts.ejs %>
</html>
Routes.js
/* eslint-disable no-unused-vars */
module.exports = function (app,passport) {
app.get('/', async function (req, res) {
res.render('index', {title:'Home'});
});
app.post('/',function (req,res) {
})
app.get('/cryptofolio/:username',isAuthenticated, function(req,res) {
res.render('cryptofolio', {title:'Cryptofolio'});
})
app.post('/portfolio',function(req,res){
})
app.get('/login',function(req,res){
res.render('login',{title:'Login'});
});
app.post('/login',passport.authenticate('local-login',{successRedirect: '/',failureRedirect:'/login',failureFlash:true}));
app.get('/register',function (req,res){
res.render('register',{title:'Register'});
})
app.post('/register',passport.authenticate('local-register',{successRedirect: '/',failureRedirect:'/register',failureFlash:true}));
app.get('/logout',function (req,res) {
req.logout();
res.redirect('/');
})
function isAuthenticated(req,res,next){
if (req.isAuthenticated()){
return next();
}
res.redirect('/login');
}
};
But when I input wrong information no errors are being flashed like they should.D

i think the check inside the template is returning false, as it needs to be checking for length not lenght

Related

Passport.authenticate() problems, Bad Request and Other Issues

I am trying to develop a small project where I am using passport js for authentication, I am facing challenges in passport.authenticate method in both login and signup pages, it doesn't goes inside the method and does not redirect or render desired destination.
home.ejs file
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css2?family=Mitr:wght#500&display=swap" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="css/biodata.css">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-primary">
<a class="navbar-brand justify-content-around" id="navbar-home" href="/">Home</a>
<div class="ml-auto" id="navbar-joint">
<a class="navbar-brand" href="/signup">Sign Up</a>
<a class="navbar-brand" href="/logout">Logout</a>
</div>
</nav>
<div class="card">
<div class="card-body">
<form action="/bioform" method="POST">
<h2 class="d-flex justify-content-center">LOGIN</h2>
<div class="form-group">
<input type="text" class="form-control form-control-lg" id="username" name="username" placeholder="Username">
</div>
<div class="form-group">
<input type="password" class="form-control form-control-lg" id="inputPassword" name="inputPassword" placeholder="Password">
</div>
<div class="form-group">
<button type="submit" class="btn btn-primary btn-lg btn-block">Submit</button>
</div>
New User
</form>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>
signup.ejs file
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css2?family=Mitr:wght#500&display=swap" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="css/biodata.css">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-primary">
<a class="navbar-brand justify-content-around" id="navbar-home" href="/">Home</a>
<div class="ml-auto" id="navbar-joint">
<a class="navbar-brand" href="/signup">Sign Up</a>
<a class="navbar-brand" href="/logout">Logout</a>
</div>
</nav>
<div class="card" id="signup-card">
<div class="card-body" id="signup-card-body">
<form action="/register" method="POST">
<h3 class="d-flex justify-content-center">SIGN UP</h3>
<div class="form-group">
<input type="text" class="form-control form-control-lg" id="username" name="username" placeholder="Username">
</div>
<div class="form-group">
<input type="email" class="form-control" id="email" name="email" placeholder="Email">
</div>
<div class="form-group">
<input type="password" class="form-control form-control-lg" id="inputPassword" name="inputPassword" placeholder="Password">
</div>
<div class="form-group">
<input type="password" class="form-control form-control-lg" id="confirminputPassword" name="confirminputPassword" placeholder="Confirm Password">
</div>
<div class="form-check">
<input type="checkbox" class="form-check-input" id="exampleCheck1" name="exampleCheck1">
<label class="form-check-label" for="exampleCheck1">I agree</label>
</div>
<div class="form-group">
<button type="submit" class="btn btn-primary btn-lg btn-block">Submit</button>
</div>
</form>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>
User.js file
var mongoose = require("mongoose");
var passportLocalMongoose = require("passport-local-mongoose");
var usersSchema = new mongoose.Schema({
username:String,
password:String,
email:String
});
usersSchema.plugin(passportLocalMongoose);
module.exports = mongoose.model("User",usersSchema);
app.js file
var express = require("express");
var app = express();
var mongoose = require("mongoose");
var passport = require("passport"),
localStrategy = require("passport-local");
const User = require("./models/User");
var expressSession = require("express-session");
mongoose.connect('mongodb://localhost/users', {useNewUrlParser: true, useUnifiedTopology: true}).catch(function(reason){
console.log('Unable to connect to the mongodb instance. Error: ', reason);
});
app.set('view engine', 'ejs');
var bod = require("body-parser");
app.use(bod.urlencoded({extended:true}));
app.use(passport.initialize());
app.use(passport.session());
app.use(expressSession({
secret:"Test Key",
resave:false,
saveUninitialized:false
}));
passport.use(new localStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
app.use(express.static(__dirname + '/resources'));
app.get("/", function(req, res) {
res.render("home");
});
app.get("/home", function(req, res) {
res.render("home");
});
app.post("/bioform",passport.authenticate("local",{
failureRedirect:"/home"
}),function(req,res){
console.log(req.body);
res.render('bioform', {userName:req.body.username})
});
app.post("/register",function(req,res){
var userName = req.body.username;
var inputPassword = req.body.inputPassword;
var email = req.body.email;
var exampleCheck1 = req.body.exampleCheck1;
var confirminputPassword = req.body.confirminputPassword;
if(exampleCheck1==="on"){
if(inputPassword===confirminputPassword){
User.register( new User({username:userName,email:email}),inputPassword, function(err,user){
console.log("Inside first");
if(err){
console.log(err);
return res.render("signup");
}
passport.authenticate("local",function(err,user,info){
//the control doesn't reach this point.
console.log("Inside second");
if(err){
return console.log(err);
}
if (!user) { return res.redirect('/home'); }
req.logIn(user, function(err) {
if (err) { console.log(err); }
return res.redirect('bioform', {userName:userName});
});
});
/*
//this startegy didn't work either
passport.authenticate("local")(req,res,function(){
console.log("Reached here ");
res.render("bioform",{userName:userName});
});
*/
});
}else{
console.log("Passwords doesn't match!!!");
res.render("signup");
}
}else{
console.log("Agree to Terms!!!");
res.render("signup");
}
});
function isLoggedIn(req,resp,next){
if(req.isAuthenticated()){
return next();
}else{
res.redirect("/home");
}
}
app.get("/signup", function(req, res) {
res.render("signup");
});
app.listen(3000,function(){
console.log("Server started");
});
passport.authenticate() seems to be the problem here, either it will display a Bad Request message or just does nothing and tries to load the requested page without success. Will deeply appreciate your help in this issue. Thanks
Update: Here is what worked for me, I wrote a new post method
app.post("/register",function(req,res){
var username = req.body.username;
var password = req.body.password;
var email = req.body.email;
User.register({username:username,email:email},password,function(err,user){
console.log("post here")
if(err){
return console.log(err);
}
if(!user){
return res.redirect('/signup');
}
req.login(user, function(err){
if(err){
return console.log(err);
}
console.log("post");
res.render("bioform",{currentUser:req.user});
});
});
});
Reverse the order of your middleware - your express sessions should be declared before passport sessions, otherwise passport will be unable to use them:
app.use(expressSession({
secret:"Test Key",
resave:false,
saveUninitialized:false
}));
app.use(passport.initialize());
app.use(passport.session());
You have some other issues as well - passport.authenticate() should not be called in your /register route. You are currently calling req.login() inside of passport.authenticate when it should be called on its own; see this StackOverflow answer as well as Passport Login Docs. You will want to do something like this:
User.register(/* ... */, function(err, user) {
if (err) {
return res.redirect('/signup');
} else {
req.login(user, function(err) {
if (!err) {
return res.redirect('/home');
} else {
// handle error
}
});
}
});
Take a closer look at passport-local-mongoose which has some simplified configuration starting with their 0.2.1 version, passport docs, and this Express LocalStrategy example. Manually register a user in your Mongoose database and test the authentication strategy with that user. Once you have that working you can move on to your /register route, assuming you are attempting to auto-login after registration

user.findOne is not a function

I am learning to use passport js in my form application and I am using a user object in an application that uses this model to save a user in database but when I return a user object that has been created and try to update that object by using findOne method I run into user.findOne is not a function error Here is my code.
Thanks in advance for helping me out.
user.js looks something like this
var mongoose = require("mongoose");
var passportLocalMongoose = require("passport-local-mongoose");
var usersSchema = new mongoose.Schema({
username:String,
password:String,
email:String
});
usersSchema.plugin(passportLocalMongoose);
module.exports = mongoose.model("User",usersSchema);
my signup page looks like this
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css2?family=Mitr:wght#500&display=swap" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="css/biodata.css">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-primary">
<a class="navbar-brand justify-content-around" id="navbar-home" href="/">Home</a>
<div class="ml-auto" id="navbar-joint">
<a class="navbar-brand" href="/signup">Sign Up</a>
<a class="navbar-brand" href="/logout">Logout</a>
</div>
</nav>
<div class="card" id="signup-card">
<div class="card-body" id="signup-card-body">
<form action="/register" method="POST">
<h3 class="d-flex justify-content-center">SIGN UP</h3>
<div class="form-group">
<input type="text" class="form-control form-control-lg" id="username" name="username" placeholder="Username">
</div>
<div class="form-group">
<input type="email" class="form-control" id="email" name="email" placeholder="Email">
</div>
<div class="form-group">
<input type="password" class="form-control form-control-lg" id="inputPassword" name="inputPassword" placeholder="Password">
</div>
<div class="form-group">
<input type="password" class="form-control form-control-lg" id="confirminputPassword" name="confirminputPassword" placeholder="Confirm Password">
</div>
<div class="form-check">
<input type="checkbox" class="form-check-input" id="exampleCheck1" name="exampleCheck1">
<label class="form-check-label" for="exampleCheck1">I agree</label>
</div>
<div class="form-group">
<button type="submit" class="btn btn-primary btn-lg btn-block">Submit</button>
</div>
</form>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>
my app.js looks like this
var express = require("express");
var app = express();
var mongoose = require("mongoose");
var passport = require("passport"),
localStrategy = require("passport-local");
const User = require("./models/User");
var expressSession = require("express-session");
mongoose.connect('mongodb://localhost/users', {useNewUrlParser: true, useUnifiedTopology: true}).catch(function(reason){
console.log('Unable to connect to the mongodb instance. Error: ', reason);
});
app.set('view engine', 'ejs');
var bod = require("body-parser");
app.use(bod.urlencoded({extended:true}));
app.use(passport.initialize());
app.use(passport.session());
app.use(expressSession({
secret:"the key",
resave:false,
saveUninitialized:false
}));
passport.use(new localStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
app.use(express.static(__dirname + '/resources'));
/*
var usersSchema = new mongoose.Schema({
username:String,
password:String,
email:String
});
var user = mongoose.model("User",usersSchema);
*/
app.get("/", function(req, res) {
res.render("home");
});
app.get("/home", function(req, res) {
res.render("home");
});
//problem method
app.post("/register",function(req,res){
var userName = req.body.username;
var inputPassword = req.body.inputPassword;
var email = req.body.email;
var exampleCheck1 = req.body.exampleCheck1;
var confirminputPassword = req.body.confirminputPassword;
if(exampleCheck1==="on"){
if(inputPassword===confirminputPassword){
User.register( new User({username:userName}),inputPassword, function(err,user){
console.log(user);
// here I tried to cast the returned object into User.js object but it didn't work
// user = new User();
if(err){
console.log(err);
return res.render("signup");
}
//I am trying to update returned object with email, I am not sure if this is the correct way to do it, would welcome suggestions. but at this point the user.findOne is not a function error is thrown.
user.findOne({username:userName},function(err,user){
user.email = email;
user.save();
console.log(user);
});
passport.authenticate("local")(req,res,function(){
res.render("bioform",{userName:userName});
});
});
}else{
console.log("Passwords doesn't match!!!");
res.render("signup");
}
}else{
console.log("Agree to Terms!!!");
res.render("signup");
}
});
//
app.get("/signup", function(req, res) {
res.render("signup");
});
app.listen(3000,function(){
console.log("Server started");
});
You are trying to call findOne in the object returned by the call to register from passport-local-moongoose.
Instead, you should call it through the User model:
const User = require("./models/User");
[...]
User.register(new User({ username: userName }), inputPassword, function(err, user) {
[...]
// Use User model instead of the object returned in User.register.
User.findOne({ username: userName }, function(err, user) {
// Your logic here.
});
});

SyntaxError: Unexpected token / in .... while compiling ejs | Node.js with MongoDB

When I try and use <% include ./partials/messages %>, <%= include ./partials/messages %>, or even <%= include ./partials/messages { %>, among my file that contains
<!-- REGISTER.EJS -->
<div class="row mt-5">
<div class="col-md-6 m-auto">
<div class="card card-body">
<h1 class="text-center mb-3">
<i class="fas fa-user-plus"></i> Register
</h1>
<% include ./partials/messages %>
<form action="/users/register" method="POST">
<div class="form-group">
<label for="name">Name</label>
<input
type="name"
id="name"
name="name"
class="form-control"
placeholder="Enter Name"
value="<%= typeof name != 'undefined' ? name : '' %>"
/>
</div>
<div class="form-group">
<label for="email">Email</label>
<input
type="email"
id="email"
name="email"
class="form-control"
placeholder="Enter Email"
value="<%= typeof email != 'undefined' ? email : '' %>"
/>
</div>
<div class="form-group">
<label for="password">Password</label>
<input
type="password"
id="password"
name="password"
class="form-control"
placeholder="Create Password"
value="<%= typeof password != 'undefined' ? password : '' %>"
/>
</div>
<div class="form-group">
<label for="password2">Confirm Password</label>
<input
type="password"
id="password2"
name="password2"
class="form-control"
placeholder="Confirm Password"
value="<%= typeof password2 != 'undefined' ? password2 : '' %>"
/>
</div>
<button type="submit" class="btn btn-primary btn-block">
Register
</button>
</form>
<p class="lead mt-4">Have An Account? Login</p>
</div>
</div>
</div>
I receive the follow error "SyntaxError: Unexpected token / in .... while compiling ejs". I am using this to add immediate feedback to users who try and register such as "password invalid" or "email already exist." I believe I have my messages.ejs file set up correctly as such:
<% if(typeof errors != 'undefined') { %>
<% errors.forEach(function(error) { %>
<div class="alert alert-warning alert-dismissible fade show" role="alert">
<%= error.msg %>
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<%}); %>
<% } %>
<% if(success_msg != '') { %>
<div class="alert alert-success alert-dismissible fade show" role="alert">
<%= success_msg %>
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<% } %>
<% if(error_msg != '') { %>
<div class="alert alert-warning alert-dismissible fade show" role="alert">
<%= error_msg %>
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<% } %>
<% if(error != '') { %>
<div class="alert alert-warning alert-dismissible fade show" role="alert">
<%= error %>
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<% } %>
I am pretty lost. I believe I have added the const example = require('example'); files correctly. My app.js file looks like
const express = require('express');
const expressLayouts = require('express-ejs-layouts');
const mongoose = require('mongoose');
const flash = require('connect-flash');
const session = require('express-session');
const passport = require('passport');
const app = express();
// Passport Config
require('./config/passport')(passport);
// DB Config
const db = require('./config/keys').mongoURI;
// Connect to MongoDB
mongoose
.connect(
db,
{ useNewUrlParser: true }
)
.then(() => console.log('MongoDB Connected'))
.catch(err => console.log(err));
app.use(express.static( 'public' ));
// EJS
app.use(expressLayouts);
app.set('view engine', 'ejs');
// Bodyparser
app.use(express.urlencoded({ extended: false }));
// Express Session
app.use(session({
secret: 'secret',
resave: true,
saveUninitialized: true
}))
// Passport Middleware
app.use(passport.initialize());
app.use(passport.session());
// Connect Flash
app.use(flash());
// Global Variables
app.use((req, res, next) => {
res.locals.success_msg = req.flash('success_msg');
res.locals.error_msg = req.flash('error_msg');
res.locals.error = req.flash('error');
next();
});
// Routes
app.use('/', require('./routes/index'));
app.use('/users', require('./routes/users'));
const PORT = process.env.PORT || 5000;
app.listen(PORT, console.log(`Server started on port ${PORT}`));
My file structure looks like:
>config
auth.js
keys.js
passport.js
>models
User.js
>node_modules
>public
>routes
index.js
users.js
>views
>partials
messages.ejs
dashboard.ejs
layout.ejs
login.ejs
register.ejs
welcome.ejs
.gitignore
app.js
package-lock.json
package.json
README.md
Does anyone have any ideas?
Error message looks like this:
SyntaxError: Unexpected token / in C:\Users\jreed\Desktop\appproject\views\register.ejs while compiling ejs
If the above error is not helpful, you may want to try EJS-Lint:
https://github.com/RyanZim/EJS-Lint
Or, if you meant to create an async function, pass `async: true` as an option.
at new Function (<anonymous>)
at Template.compile (C:\Users\jreed\Desktop\appproject\node_modules\ejs\lib\ejs.js:626:12)
at Object.compile (C:\Users\jreed\Desktop\appproject\node_modules\ejs\lib\ejs.js:366:16)
at handleCache (C:\Users\jreed\Desktop\appproject\node_modules\ejs\lib\ejs.js:215:18)
at tryHandleCache (C:\Users\jreed\Desktop\appproject\node_modules\ejs\lib\ejs.js:254:16)
at View.exports.renderFile [as engine] (C:\Users\jreed\Desktop\appproject\node_modules\ejs\lib\ejs.js:459:10)
at View.render (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\view.js:135:8)
at tryRender (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\application.js:640:10)
at Function.render (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\application.js:592:3)
at ServerResponse.render (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\response.js:1012:7)
at ServerResponse.res.render (C:\Users\jreed\Desktop\appproject\node_modules\express-ejs-layouts\lib\express-layouts.js:77:18)
at router.get (C:\Users\jreed\Desktop\appproject\routes\users.js:13:43)
at Layer.handle [as handle_request] (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\router\layer.js:95:5)
at next (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\router\route.js:137:13)
at Route.dispatch (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\router\route.js:112:3)
at Layer.handle [as handle_request] (C:\Users\jreed\Desktop\appproject\node_modules\express\lib\router\layer.js:95:5)
Here is my users.js file:
<!-- USERS.JS -->
const express = require('express');
const router = express.Router();
const bcrypt = require('bcryptjs');
const passport = require('passport');
// User Model
const User = require('../models/User');
// Login Page
router.get('/login', (req, res) => res.render('login'));
// Register Page
router.get('/register', (req, res) => res.render('register'));
// Register Handle
router.post('/register', (req, res) => {
const {name, email, password, password2} = req.body;
let errors = [];
// Check required fields
if (!name || !email || !password || !password2) {
errors.push({msg: 'Please enter all fields'});
}
// Check passwords match
if (password != password2) {
errors.push({msg: 'Passwords do not match'});
}
// Check password length
if (password.length < 6) {
errors.push({msg: 'Password must be at least 6 characters'});
}
if (errors.length > 0) {
res.render('register', {errors, name, email, password, password2});
} else { // Validation passed
User.findOne({email: email}).then(user => {
if (user) { // User Exists
errors.push({msg: 'Email is already registered'})
res.render('register', {errors, name, email, password, password2});
} else {
const newUser = new User({
name,
email,
password
});
// Hash Password
bcrypt.genSalt(10, (err, salt) => bcrypt.hash(newUser.password, salt, (err, hash) => {
if(err) throw err;
// Set password to hashed
newUser.password = hash;
// Save user
newUser.save()
.then(user => {
req.flash('success_msg', 'Congratulations! You are now registered and can log in.');
res.redirect('/users/login');
})
.catch(err => console.log(err));
}))
}
});
}
});
// Login Handle
router.post('/login', (req, res, next) => {
passport.authenticate('local',{
successRedirect: '/dashboard',
failureRedirect: '/users/login',
failureFlash: true
})(req, res, next);
});
// Logout Handle
router.get('/logout', (req, res) => {
req.logout();
req.flash('success_msg', 'You are logged out.');
res.redirect('/users/login');
});
module.exports = router;
I think I solved it!
<%- include ('partials/messages') %>
I have no idea why that is the only method that works though, trying to research it now.

nodejs: express-validator errors undefined in ejs template

I am using ejs engine instead of pug. When I click register button, I got errors undefined in my register view. There was only little chance that I can get the validation messages, but when I click other links and then back to the register page, the same error occurred again.
Here's my code:
app.js
//app.js code
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var passport = require('passport');
var expressValidator = require('express-validator');
var LocalStrategy = require('passport-local').Strategy;
var multer = require('multer');
var upload = multer({dest: './uploads'});
var flash = require('connect-flash');
var mongo = require('mongodb');
var mongoose = require('mongoose');
var db = mongoose.connection;
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
// Handle Sessions
app.use(session({
secret:'secret',
saveUninitialized: true,
resave: true
}));
// Passport
app.use(passport.initialize());
app.use(passport.session());
// Validator
app.use(expressValidator({
errorFormatter: function(param, msg, value) {
var namespace = param.split('.')
, root = namespace.shift()
, formParam = root;
while(namespace.length) {
formParam += '[' + namespace.shift() + ']';
}
return {
param : formParam,
msg : msg,
value : value
};
}
}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(flash());
app.use(function (req, res, next) {
res.locals.messages = require('express-messages')(req, res);
next();
});
app.use('/', routes);
app.use('/users', users);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
user.js
//user.js code
var express = require('express');
var router = express.Router();
var multer = require('multer');
var upload = multer({dest: 'uploads/'});
/* GET users listing. */
router.get('/', function(req, res, next) {
res.render('members', {page_name : 'members'});
});
router.get('/register', function(req, res, next) {
res.render('register', { page_name: 'register' });
});
router.post('/register', upload.single('profileimage'), function(req, res) {
var name = req.body.name;
var username = req.body.username;
var email = req.body.email;
var password = req.body.password;
var password2 = req.body.password2;
if(req.file){
console.log("uploading file");
var profileimage = req.file.filename;
} else{
var profileimage = "noimage.jpg";
}
req.checkBody('name','Name field is required').notEmpty();
req.checkBody('email','Email field is required').notEmpty();
req.checkBody('email','Email is not valid').isEmail();
req.checkBody('username','Username field is required').notEmpty();
req.checkBody('password','Password field is required').notEmpty();
req.checkBody('password2','Passwords do not match').equals(req.body.password);
// Check Errors
errors = req.validationErrors();
//var errors = JSON.stringify(req.validationErrors());
if(errors){
console.log("errors: " + errors);
res.render('register', {errors: errors});
} else{
console.log('No Errors');
res.render("/");
}
});
router.get('/login', function(req, res, next) {
res.render('login', { page_name: 'login' });
});
module.exports = router;
register.ejs
//register.ejs code
<%include layout%>
<div class="container">
<% if(errors){errors.forEach(function(error){%>
<div class="alert alert-danger"><%= error.msg %></div>
<% })} %>
<h4>register</h4>
<form action="/users/register" method="post" enctype="multipart/form-data">
<div class="form-group">
<label for="exampleFormControlInput1">Name</label>
<input type="text" class="form-control" name="name" placeholder="John">
</div>
<div class="form-group">
<label for="exampleFormControlInput1">Email address</label>
<input type="email" class="form-control" name="email" placeholder="name#example.com">
</div>
<div class="form-group">
<label for="exampleFormControlInput1">Username</label>
<input type="text" class="form-control" name="username" placeholder="username">
</div>
<div class="form-group">
<label for="exampleFormControlInput1">Password</label>
<input type="password" class="form-control" name="password" placeholder="password">
</div>
<div class="form-group">
<label for="exampleFormControlInput1">Confirm Password</label>
<input type="password" class="form-control" name="password2" placeholder="confirm password">
</div>
<div class="form-group">
<label for="exampleFormControlInput1">Profile Image</label>
<input type="file" class="form-control" name="profileimage" >
</div>
<button type="submit" class="btn btn-primary">Register</button>
</form>
</div>
Error
ReferenceError: /Users/duanzhen/Documents/web_workspace/12_projects/node_auth/views/register.ejs:5
3| <div class="container">
4|
>> 5| <% if(errors){errors.forEach(function(error){%>
6|
7| <div class="alert alert-danger"><%= error.msg %></div>
8|
errors is not defined
at eval (eval at compile (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/ejs/lib/ejs.js:549:12), <anonymous>:22:8)
at returnedFn (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/ejs/lib/ejs.js:580:17)
at tryHandleCache (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/ejs/lib/ejs.js:223:34)
at View.exports.renderFile [as engine] (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/ejs/lib/ejs.js:437:10)
at View.render (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/view.js:127:8)
at tryRender (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/application.js:640:10)
at Function.render (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/application.js:592:3)
at ServerResponse.render (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/response.js:971:7)
at /Users/duanzhen/Documents/web_workspace/12_projects/node_auth/routes/users.js:12:9
at Layer.handle [as handle_request] (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/layer.js:95:5)
at next (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/route.js:137:13)
at Route.dispatch (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/layer.js:95:5)
at /Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/index.js:281:22
at Function.process_params (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/index.js:335:12)
at next (/Users/duanzhen/Documents/web_workspace/12_projects/node_auth/node_modules/express/lib/router/index.js:275:10)
That's because you are trying to access a non existing variable, note that errors variable is only generated and returned to the view if there where validation errors in your form, otherwise it's undefined, that's why in your condition you have to check if errors variable exists, Like this:
if (typeof errors !== 'undefined') { ...
Note: The typeof operator returns a string: the type of the variable, if the variable is not declared it will return undefined
npm uninstall express-validator --save
npm install express-validator#2.20.8 --save
Have a look at my code, it is working
in file 'index.js'
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Home' ,
success:false,
errors:req.session.errors ,
success:req.session.success });
req.session.errors=null;
});
//////////////checking the form validation
router.post('/submit', function(req, res, next) {
req.check('email','Invalid Email Address!!!!!').isEmail();// it's an built in exprexx validator, but we can also write our own
req.check('password','Pssword lenght must be greater than 5!! ').isLength({min:5});
req.check('password','Password is not confirmed!!').equals(req.body.confirmpassword);
var errors=req.validationErrors();
if (errors){
req.session.errors=errors;
req.session.success=false;
}
else{
req.session.success=true;
}
res.redirect('/');
});
module.exports = router;
in file 'index.ejs'
<h1>Fill the form below..</h1><h1></h1>
<h1>It's an example of Express Validator..</h1><h1></h1>
<% if (success) { %>
<h1><span class="badge badge-success">Congrats!! Form validation is secceded!!!</span></h1>
<% } else { %>
<% if (errors) { %>
<div class="alert alert-danger" role="alert">
<h1><span class="badge badge-danger">Errors Occured!! </span></h1>
<% errors.forEach(function(errors) { %>
<h5><%= errors.msg %> </h5>
<% }); %>
</div>
<% } else { %>
<form action="/submit" method="POST">
<div class="form-row">
<div class="col-7">
<input type="email" class="form-control" id="email" placeholder="email" name="email">
</div>
<div class="col">
<input type="password" class="form-control" id="password" placeholder="password" name="password">
</div>
<div class="col">
<input type="password" class="form-control" id="confirmpassword" placeholder="confirmpassword" name="confirmpassword">
</div>
</div>
<h1></h1>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
<% } %>
<% } %>
And of course don't forget to add this lines in 'app.js' file:
//adding validator and session
app.use(expressValidator());
app.use(expressSession({secret:'max',saveUninitialized:false,resave:false}));
<% if(locals.errors){locals.errors.forEach(function(error){%>
<div class="alert alert-danger"><%= error.msg %></div>
<% })} %>

Flash Message from ejs in Express 4

I am trying to show a confirmation message before user deletes anything. I've tried following various related sources that I found in internet, but couldn't get them to work. I am using EJS template and Express 4.
app.js
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
var flash = require('connect-flash');
var session = require('express-session');
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use('/js', express.static(__dirname + '/node_modules/bootstrap/dist/js')); // redirect bootstrap JS
app.use('/css', express.static(__dirname + '/node_modules/bootstrap/dist/css')); // redirect CSS bootstrap
// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(cookieParser());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(require('stylus').middleware(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'public')));
app.use(session({ secret: 'zxcv' })); // session secret
app.use(flash()); // use connect-flash for flash messages stored in session
app.use('/', routes);
app.use('/users', users);
// catch 404 and forward to error handler
app.use(function (req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
app.listen(8000);
module.exports = app;
index.js
var express = require('express');
var router = express.Router();
var searchModule = require('../crud_module/search.js');
var updateModule = require('../crud_module/update.js');
var deleteModule = require('../crud_module/delete.js');
/* GET home page. */
router.get('/', function (req, res) {
res.render('index', { title: '' });
});
router.post('/search-results', function (req, res) {
searchModule.search(req.body, function (data) {
res.render('index', { title: '', results: data });
});
});
router.post('/edit-data', function (req, res) {
searchModule.searchById(req.body, function (data) {
res.render('edit', { title: '', results: data });
});
});
router.post('/save-changes', function (req, res) {
if (req.body.change == "update") {
updateModule.saveChanges(req.body, function (err) {
if (err) {
res.render('edit', { message: req.flash('Error', 'Error Occured') });
} else {
//req.flash('success', 'Your name was updated');
res.render('edit', { message: req.flash('success', 'Data was updated')) });
}
res.redirect('/edit-data');
});
}
if (req.body.change == "delete") {
deleteModule.deleteRecord(req.body, function (data) {
res.render('edit', { title: 'Volume Tracker', confirmation: data });
});
}
});
module.exports = router;
edit.ejs
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<link href="node_modules/popups/css/popupS.min.css" rel="stylesheet" />
<script type="text/javascript" src="https://gc.kis.scr.kaspersky-labs.com/5B1FA715-F8FF-784F-A4C9-0D867337CB3D/main.js" charset="UTF-8"></script><script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<script src="node_modules/elasticsearch/src/elasticsearch.angular.js"></script>
<script src="node_modules/popups/dist/popupS.min.js"></script>
<script language="javascript">
</script>
<style type="text/css">
</style>
</head>
<body>
<br>
<form action='/save-changes' method='post'>
<div class="container">
<% if(locals.results) { %>
<table class="table table-bordered table-hover table-condensed">
<tr>
<th bgcolor="silver">Term Key</th>
<td>
<input name="termKey" value= "<%= results[0]._source.termkey %>" style="border:none; width:100%"/>
</td>
</tr>
<tr>
<th bgcolor="silver">Active</th>
<td>
<input name="active" value= "<%= results[0]._source.active %>" style="border:none; width:100%"/>
</td>
</tr>
<tr>
<th bgcolor="silver">Term Description</th>
<td>
<input name="termDescription" value= "<%= results[0]._source.termdescription %>" style="border:none; width:100%"/>
</td>
</tr>
</table>
<div align="center">
<button type="submit" class="btn btn-info" name="change" value="update"> Save Changes </button>
<button type="submit" class="btn btn-danger" name="change" value="delete"> Delete Record </button>
</div>
<% } %>
</form>
<br>
</div>
</body>
</html>
Here, when the user will click on the delete button, a confirmation message will be shown (here--> in index.js, I first tried showing confirmation message after user updates anything; which didn't work either). But whenever I try to include this:
<% if (message.length > 0) { %>
<div class="alert alert-danger"><%= message %></div>
<% } %>
in edit.ejs , I get error:
ReferenceError:
92| </form>
93| <br>
>> 94| <% if (message.length > 0) { %>
95| <div class="alert alert-danger"><%= message %></div>
96| <% } %>
message is not defined
at eval (eval at <anonymous> (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\ejs\lib\ejs.js:495:12), <anonymous>:41:12)
at Template.compile.returnedFn (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\ejs\lib\ejs.js:524:17)
at View.exports.renderFile [as engine] (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\ejs\lib\ejs.js:378:31)
at View.render (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\express\lib\view.js:76:8)
at Function.app.render (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\express\lib\application.js:527:10)
at ServerResponse.res.render (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\express\lib\response.js:900:7)
at \ElasticSearch\ES\VolumeTracker\VolumeTracker\routes\index.js:22:13
at \ElasticSearch\ES\VolumeTracker\VolumeTracker\crud_module\search.js:45:9
at tryCallOne (\ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\elasticsearch\node_modules\promise\lib\core.js:37:12)
at \ElasticSearch\ES\VolumeTracker\VolumeTracker\node_modules\elasticsearch\node_modules\promise\lib\core.js:123:15
I have a simpler solution; as an example: after a succesful registration of a new user in the file routes/users.js:
req.flash('success_msg', 'You are registered and can now log in');
res.redirect('login');
In a file views/partials/_messages.ejs:
<% if (success_msg != '') { %>
<div class="alert alert__success"><%= success_msg %></div>
<% } %>
And in views/login.ejs include:
<% include ./partials/_messages %>
No other JavaScript needed!
I am posting here answer to my own question, in case anyone needs the same thing. To pass flash message to view, in your app.js ensure the following is present (note I am using ejs template for view) :
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var app = express();
var flash = require('connect-flash');
var session = require('express-session');
app.use(cookieParser());
app.use(session({ secret: 'zxcv' })); // session secret
app.use(flash()); // use connect-flash for flash messages stored in session
in your index.js
router.post('/edit', function (req, res) {
if (req.body.change == "update") { //if update btn is clicked
updateModule.saveChanges(req.body, function (err) { //call update module
if (err) {
//if error
req.flash("msg","Error Occured");
res.locals.messages = req.flash();
res.render('edit', { title: 'myApp'});
} else {
//on success
req.flash("msg", "Data updated successfully");
res.locals.messages = req.flash();
res.render('index', { 'title': 'myApp'});
}
});
}
});
and here is my view: for editing--> edit.ejs
<body>
<form action='/edit' method='post'>
<!--your data-->
<script language="javascript">
function UpdateConfirm() {
var userPreference;
if (confirm("Do you want to save changes?") == true) {
return true;}
else {
return false;}
}
</script>
<button type="submit" class="btn btn-info" name="change" value="update" onClick= "<%- "return UpdateConfirm()" %>" > Save Changes </button>
</form>
</body>
Here, if you click on the button, it will first popup a confirmation alert box (will call UpdateConfirm()), and if you click yes then it will submit the form.
Now, after updating I am passing flash message from my index.js. The view where you want to show the flash message, put this:
<% if (locals.messages) { %>
<script language="javascript">
alert("<%= messages.msg %>");
</script>
<% } %>
It will show the message in an alert box.
P.S: You have to install these npm packages: cookie-parser,connect-flash and connect-flash

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