Develop Reference

cannot load partials or layout in hbs

I am facing some errors while integrating hbs and express in node js
content from layouts& partials are getting not loaded ,even though they are connected to
app.js , layout is loading when we move it into root of view.its not loading when its in a folder inside view.
When i move layouts.hbs to root it starts to load but partials are not loading since its inside a folder.(error:The partial my_partial could not be found)
when i googled about partial i found that hbs.registerPartial(path.join(__dirname, "/views/partials")); could be used but it showed an error that hbs.registerPartial is not a function.
so anyone please suggest me what to do
I expect solution for
How can i load default layout and partials by creating folders named layouts and partials respectively
-- views
-- partials
partial1.hbs
partial2.hbs
-- layouts
layout.hbs
app.js
error.hbs
//app.js
var createError = require('http-errors');
var express = require('express');
const hbs = require('express-handlebars');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
hbs.registerPartial(path.join(__dirname, "/views/partials"));
app.engine("hps", hbs.engine({ extname: "hbs", defaultLayout: "layout", layoutsDir: path.join(__dirname, 'views', "layout"), partialsDir: path.join(__dirname, 'views', "partials") }))
console.log(path.join(__dirname, 'views', "layout"))
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', indexRouter);
app.use('/users', usersRouter);
// catch 404 and forward to error handler
app.use(function (req, res, next) {
next(createError(404));
});
// error handler
app.use(function (err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;

Not Found 404 NotFoundError: Not Found Node JS and Express

I'm trying to access my routes /api and /api/superheroes, but i'm getting this error when I do that.
Not Found
404
NotFoundError: Not Found
at C:\Users\mikae\Desktop\Project\node-express-swig-mongo\app.js:27:8
at Layer.handle [as handle_request] (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:317:13)
at C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:335:12)
at next (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:275:10)
at C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:635:15
at next (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:260:14)
at Function.handle (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:174:3)
at router (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\express\lib\router\index.js:47:12)
app.js
var api = require('./routes/api.js');
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/api', api);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
api.js
var express = require('express');
var router = express.Router();
router.get('/superheros', function(req, res) {
res.send('Just a test');
});
module.exports = router;
I'm following a tutorial and I already saw from scratch again and I didn't found the solution. I just want to access the routes that I've created to continue the lesson. Someone can help me? What should I do?

You've got a typo: it says /superheros (heros, not heroes) in api.js. Also, under /api, you're mounting a Router instance that has exactly one route defined: /superheros. There's no / route in the Router that you pass to:
app.use('/api', api);
And so, there is no handler for /api + /.

Node.js express router.post returns 404 not found

My express application seems to return 404 NOT FOUND whenever im using a post request method in my routes file. GET-requests are working fine and i can only see "GET" requests in the console aswell, even if im using a post request.
Is there some missing link between app.js and routes/index.js that might be causing this?
// routes/index.js
router.post('/foo', function (req, res, next) {
res.setHeader('Content-Type', 'application/json');
res.send('You sent: sdadad to Express');
})
// 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 index = require('./routes/index');
var app = express();
var cors = require('cors')
app.use(cors())
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// 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 }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', index);
// 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 handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
Result:
Not Found 404
Error: Not Found
at C:\Users\willow\Desktop\backend\app.js:29:13
at Layer.handle [as handle_request] (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:317:13)
at C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:335:12)
at next (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:275:10)
at C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:635:15
at next (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:260:14)
at Function.handle (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:174:3)
at router (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:47:12)
at Layer.handle [as handle_request] (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:317:13)
at C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:335:12)
at next (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:275:10)
at SendStream.error (C:\Users\willow\Desktop\backend\node_modules\serve-static\index.js:121:7)

What you wanna do should look like this in practice:
// routes/index.js
module.exports = (express) => {
// Create express Router
var router = express.Router();
// add routes
router.route('/foo')
.post((req, res) => {
res.setHeader('Content-Type', 'application/json');
res.send('You sent: sdadad to Express');
});
return router;
}
// 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')(express); // require routes at routes/index.js
var app = express();
var cors = require('cors')
app.use(cors())
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// 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 }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
// 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 handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;

What I usually do is create a function that expects express as param like this
(routes/index.js)
module.exports = (express) => {
// Create express Router
var api = express.Router();
// add routes
api.route('/some_endpoint')
.post((req, res) => {
res.json({ message : 'some message' })
});
return api;
}
then I just import this file to my app.js
like this
(app.js)
// set api as a middleware
const api = require('./routes')(express);
app.use('/api/v1', api);
that way I hook up my api and my server.

How can I render .ejs file from node.js controller?

I have the following folder structure:
bin
controllers
models
node_modules
public
routes
views
app.js
package.json
As I am new to node.js and express.js, I would like to know how to render .ejs file from the controller file. Currently, my code looks like:
//controllers/login.js
module.exports = {
getLoginPage: function (req, res) {
res.render('login-form');
}
};
//routes/login.js
var login = require('../controllers/login');
module.exports = function(app){
app.get('/', login.getLoginPage);
};
//app.js
var express = require('express');
var http = require('http');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser'); //parses information from POST
var stylus = require('stylus');
var validator = require('express-validator');
var session = require('express-session');
var app = express();
require('./routes/login')(app);
// 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 }));
app.use(validator());
app.use(cookieParser());
app.use(stylus.middleware(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'public')));
app.use(session({secret: 'max', saveUninitialized: false, resave: false}));
// 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 handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
In my controller, if I write res.send("Hello");, it prints but I want the entire .ejs file to show up on my browser. How is this possible?
Also, if I render the .ejs from my routes, it's displaying properly but not from the controllers.
//error
Error: Failed to lookup view "error" in views directory "C:\node\folder-name\views"
at EventEmitter.render (C:\node\folder-name\node_modules\express\lib\application.js:580:17)
at ServerResponse.render (C:\node\folder-name\node_modules\express\lib\response.js:971:7)
at C:\node\folder-name\app.js:60:7
at Layer.handle_error (C:\node\folder-name\node_modules\express\lib\router\layer.js:71:5)
at trim_prefix (C:\node\folder-name\node_modules\express\lib\router\index.js:315:13)
at C:\node\folder-name\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\node\folder-name\node_modules\express\lib\router\index.js:335:12)
at next (C:\node\folder-name\node_modules\express\lib\router\index.js:275:10)
at Layer.handle_error (C:\node\folder-name\node_modules\express\lib\router\layer.js:67:12)
at trim_prefix (C:\node\folder-name\node_modules\express\lib\router\index.js:315:13)
Thanks

Change your view path to this:-
app.set('views',path.join(__dirname+'/views/'));
then in controller you can simply use
//assuming hello.ejs is in your view folder
response.render('hello.ejs');
and if you have folders in views folder then use
response.render('error/404.ejs');

First, you need to set the rendering engine for views:
app.set('view engine','ejs');

You need to set the view engine to ejs :
app.set('view engine', 'ejs')
Docs

Try the following:
var path = require('path');
res.render(path.resolve('./views/error'))

Failed to look up '/user/profile' in views directory

I'm trying to build a shopping cart using node.js, express.js and mongodb. I'm in the process of building the sign up functionality. My problem is when I try to access the localhost:3000/user/profile link I get this error message:
Failed to lookup view "/user/profile" in views directory
"/Users/vynguyen/shopping-cart/views
Error: Failed to lookup view "/user/profile" in views directory "/Users/vynguyen/shopping-cart/views"
at EventEmitter.render (/Users/vynguyen/shopping-cart/node_modules/express/lib/application.js:579:17)
at ServerResponse.render (/Users/vynguyen/shopping-cart/node_modules/express/lib/response.js:960:7)
at /Users/vynguyen/shopping-cart/routes/index.js:34:6
at Layer.handle [as handle_request] (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/layer.js:95:5)
at next (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/route.js:131:13)
at Route.dispatch (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/layer.js:95:5)
at /Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:277:22
at Function.process_params (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:330:12)
at next (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:271:10)
at csrf (/Users/vynguyen/shopping-cart/node_modules/csurf/index.js:117:5)
at Layer.handle [as handle_request] (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:312:13)
at /Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:280:7
at Function.process_params (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:330:12)
at next (/Users/vynguyen/shopping-cart/node_modules/express/lib/router/index.js:271:10
)
The profile.hbs file is located in the right folder, but for some reason the server won't pull it up.
Here's the whole file structure:
enter image description here
Here's my index.js file:
var express = require('express');
var router = express.Router();
var csrf = require('csurf');
var passport = require('passport');
var Product = require('../models/product');
var csrfProtection = csrf();
router.use(csrfProtection);
/* GET home page. */
router.get('/', function(req, res, next) {
Product.find(function(err, docs) {
var productChunks = [];
var chunkSize = 3;
for (var i = 0; i < docs.length; i += chunkSize) {
productChunks.push(docs.slice(i, i + chunkSize));
}
res.render('shop/index', { title: 'Shopping Cart', products: productChunks });
});
});
router.get('/user/signup', function(req, res, next) {
res.render('user/signup', {csrfToken: req.csrfToken()});
});
router.post('/user/signup', passport.authenticate('local.signup', {
successRedirect: '/user/profile',
failureRedirect: '/user/signup',
failureFlash: true
}));
router.get('/user/profile', function(req, res, next){
res.render('/user/profile');
});
module.exports = router;
Here's my 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 expressHbs = require('express-handlebars');
var mongoose = require('mongoose');
var session = require('express-session');
var passport = require('passport');
var flash = require('connect-flash');
var routes = require('./routes/index');
var userRoutes = require('./routes/user');
var app = express();
mongoose.connect('localhost:27017/shopping');
require('./config/passport');
// view engine setup
app.set('views', __dirname+'/views');
app.engine('.hbs', expressHbs({defaultLayout: 'layout', extname: '.hbs'}));
app.set('view engine', '.hbs');
// 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 }));
app.use(cookieParser());
app.use(session({secret: 'mysupersecret', resave: false, saveUninitialized: false}));
app.use(express.static(path.join(__dirname, 'public')));
app.use(flash());
app.use(passport.initialize());
app.use(passport.session());
app.use('/user', userRoutes);
app.use('/', routes);
// 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 handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;

When the view file path is resolved, the view path with leading slash will resolve to root directory and so the error. You need to resolve the view file relative to your views directory. Using user/profile or ./user/profile in res.render method would resolve the view file correctly.
correct code:
res.render('user/profile') or res.render('./user/profile')