I am new to node.js and express and I was wondering if I require something in app.js do I still need to require it in indivisual routing files such as index.js and user.js
Example Structure for express project:
/example
app.js
/bin
www
package.json
/node_modules
[about 4,500 subdirectories and files]
/public
/images
/javascripts
/stylesheets
style.css
/routes
index.js
users.js
/views
error.pug
index.pug
layout.pug
/app.js:
var createError = require('http-errors');
var express = require('express');
var path = require('path');
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(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;
/routes/index.js:
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});
module.exports = router;
/routes/user.js:
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.get('/', function(req, res, next) {
res.send('respond with a resource');
});
module.exports = router;
Related
I am tring to give 2 roots one for admin and other for user.
To access the admin pannel http://localhost:3000/admin
To access to user page http://localhost:3000.
But the problem is when an option is selected from the menu of admin pannel it will not take to that page , and shows a 404 error.[if i click option which have an href add-faq it must show like http://localhost:3000/admin/add-faq. but it is showing http://localhost:3000/add-faq and giving 404 error]
But the user page had no problems.
I am using node js,Express,Hbs.
All files are named properly and no files missing..
If the http://localhost:3000/admin/add-faq is manually given the stylesheets are not loading (404)
GITHUB :https://github.com/bimalboby/clevercode
PLEASE HELP AND THANKS IN ADVANCE😊
My App.js file:
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var userRouter = require('./routes/user');
var adminRouter = require('./routes/admin');
var hbs = require('express-handlebars')
var app = express();
var db=require('./config/connection')
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
app.engine('hbs',hbs({extname:'hbs',defaultLayout:'layout',layoutDir:__dirname+'/views/layouts',partialsDir:__dirname+'/views/partials'}))
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')));
db.connect((err)=>{
if(err) console.log('connection failed'+err);
else console.log('connected to database');
})
app.use('/', userRouter);
app.use('/admin',adminRouter);
// 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;```
**My admin.js:**
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.get('/', function(req, res, next) {
res.render('adminintro',{admin:true})
});
router.get('/add-prices', (req,res)=>{
res.render('faqadmin',{admin:true})
});
router.get('/add-faq',(req,res)=>{
res.render('faqadmin',{admin:true})
})
module.exports = router;
**my user.js:**
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index',{admin:false,indexpage:true});
});
router.get('/faq',(req,res)=>{
res.render('faq',{indexpage:true})
});
router.get('/web-design-pricing',(req,res)=>{
res.render('price',{indexpage:true})
});
router.get('/e-commerce-pricing',(req,res)=>{
res.render('price',{indexpage:true})
});
router.get('/seo-pricing',(req,res)=>{
res.render('price',{indexpage:true})
});
module.exports = router;
Try adding the complete end point like below in /views/partials/admin-header.hbs file like below,
<li>FAQ</li>
Your user routes are with the endpoint '/' in server.js.So its working,where as admin need to be linked like /admin/add-faq
I am using body-parser but it's not working and I don't know what the problem is.
app.js
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const bodyParser = require('body-parser');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var app = express();
//bodyParser
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
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;
index.js
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', redirection, function(req, res, next) {
res.redirect('index', {title: 'Home'});
});
router.get('/country', function(req, res, next) {
// CountryName
res.render('country',
{
title: 'Home',
mainJS: 'main.js',
//country: req.body.countries
});
console.log(req.body)
});
function redirection(req, res){
if (req.url == '/'){
res.redirect('/country');
}
}
module.exports = router;
In this code it throws {}
What is the problem?
Your server only receives a request body in POST (or PUT or PATCH) operations, not in GET operations. You don't have router.post() in your sample code, so it seems you are not handling POSTs. Therefore, no req.body.
You can find your https://example.com/?query=parameters&query2=parameters at req.params.query and req.params.query2.
You can't use the location bar of a browser to do a POST: they from a form posts or xhr / fetch operations.
I am getting an error "indexRouter is not defined while I am trying to execute the following code. I tried removing the line but again there are other errors. Can anyone tell me why we are using this common variable router for both index.js and user.js?
This is my app.js
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var bodyParser = require('body-parser');
var index = require('./routes/index');
var users = require('./routes/users');
var dishRouter = require('./routes/dishRouter');
const mongoose = require('mongoose');
mongoose.Promise = require('bluebird');
const Dishes = require('./models/dishes');
const url = 'mongodb://localhost:27017/conFusion';
const connect = mongoose.connect(url,{
useMongoClient : true
});
connect.then((db) => {
console.log('Connected correctly to the server');
},(err) => {console.log(err);});
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
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('/index',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;
This is my index.js
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});
module.exports = router;
This is my users.js
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.get('/', function(req, res, next) {
res.send('respond with a resource');
});
module.exports = router;
You are using wrong variable.
var index = require('./routes/index');
var users = require('./routes/users');
app.use('/index',indexRouter); // it would be index
app.use('/users',usersRouter); // it would be users
Change from indexRouter to index and userRouter to users.
I am just going through nodejs, expressjs and coffeescript. My code is,
app.js
require('coffee-script').register();
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 users = require('./routes/users');
var app = express();
// 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);
//app.use('/users', users);
require('./apps/authentication/routes')(app);
// 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;
My CoffeeScript Code is.
routes.coffee
routes = (app) ->
app.get "/login", (req , res) ->
res.render "views/login",
title: 'Login'
stylesheet: 'login'
module.export = routes
When i run project, i face following issue.
app.get("/login", function(req, res) {
^
ReferenceError: app is not defined
can anyone tell me why app variable is not defined at whereas i am passing app variable when requiring route?
If i remove white spaces from coffeescript file as mentioned below
routes = (app) ->
app.get "/login", (req , res) ->
res.render "views/login",
title: 'Login'
stylesheet: 'login'
module.export = routes
it return exception require(...) is not a function as mentioned below
require('./apps/authentication/routes')(app);
^
TypeError: require(...) is not a function
Thanks
Finally, I am able to fix this, it was syntax error in coffeescript.
I just changed
module.export
to
module.exports
Thanks,
I'm fairly new to express js and I want to know how to use router. I created a file named categories.js inside routes directory with this code.
categories.js code:
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.get('/categories', function(req, res) {
res.send('this is the category');
});
module.exports = router;
inside the app.js i have this 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 routes = require('./routes/index');
var users = require('./routes/users');
var categories = require('./routes/categories');
var app = express();
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hjs');
// uncomment after placing your favicon in /public
//app.use(favicon(__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);
app.use('/users', users);
app.use('/categories', categories);
// 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;
I have tried understand what is wrong but i can't see to figure out. thanks in advance.
This is the error im getting
Not Found
404
I will like to add inside the routes directory i have a index.js file and this one works.
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});
module.exports = router;
I think my application is not reading the categories.js file, because when I put the category.js code inside index.js it works. but it doesn't work if i put it in a separate file in my case category.js.
I think you've got your categories route hooked up wrong, your categories are mapped to /categories/categories in your code. To fix it, try this in your app.js:
app.use('/', categories);
If you don't want to prefix, you can also simply do this:
app.use(categories);