azat-co / proexpressjs

Examples for the Practical Node.js book [Apress, 2014]

Examples for the Pro Express.js book [Apress, 2014]

Pro Express.js

The book is in progress, if you would like to receive alpha, email/tweet/Skype/text the author (@azat_co) directly.

http://proexpressjs.com

http://amzn.to/1pZdGFo

http://www.apress.com/9781484200384

proexpressjs's Issues

Code correction -- P92

Chapter 6 - Parameters and Routing, P92
On the second block of code:

app.get('/admin/:username', function(request, response, next) {
  //... Same thing, req.user is avaialble
  return res.render(user);  // -> should be: return res.render(req.user);
});

Another note is that most times you receive request and response as arguments and use them with the short version req and res.

How to use domain in node.js with expressjs

Hi,

I am new to node.js and am using express framework in nodejs. I am accessing data through rest API using node-rest-client module. If API response getting delayed, then server getting disconnected and am restarting the server everytime. Also, how log the exception errors in custom log path. Below is my app.js code, Please check whether i am in right direction,

/**

• Module dependencies.
  */

var express = require('express')
, util = require('util')
, logger = require('morgan')
, fs = require('fs')
, url = require('url')
, session = require('express-session')
, bodyParser = require("body-parser")
, cookieParser = require("cookie-parser")
, favicon = require('serve-favicon')
, errorHandler = require('errorhandler')
, flash = require('connect-flash')
, methodOverride = require('method-override');

var http = require('http');
var path = require('path');
var Client = require('node-rest-client').Client;
var client = new Client();

var moment = require('moment');
var md5 = require('MD5');

global.moment = moment;
global.client = client;
global.md5 = md5;

// Create a write stream (in append mode)
var accessLogStream = fs.createWriteStream(__dirname + '/access.log', {flags: 'a'})
var app = express();

// All environments
app.set('port', process.env.PORT || 2000);
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
app.use(favicon(__dirname + '/public/images/favicon.ico'));
app.use(logger("combined", {stream: accessLogStream,skip: function (req, res) { return res.statusCode < 400 }}));
app.use(bodyParser.urlencoded({
extended: true,
limit: '15mb'
}));
app.use(bodyParser.json({limit: '15mb'}));
app.use(methodOverride());
app.use(cookieParser('secret'));
app.use(session({secret: 'ssshhhhh',resave: true,saveUninitialized: true}));
app.use(flash()); // To display flash message(success or failure)
app.use(express.static(path.join(__dirname, 'public')));
// Development only
if ('development' == app.get('env')) {
app.use(errorHandler({ dumpExceptions: true, showStack: true }));
}

app.use(function(err, req, res, next) {
console.error(err.stack);
res.status(500).send('Something broke!');
});

// Common middleware to execute before every request - starts here
app.use(function(req, res, next) {
res.locals.session_values = req.session;
res.locals.success_messages = req.flash('success_messages');
res.locals.error_messages = req.flash('error_messages');
next();
});
// Common middleware to execute before every request - ends here

require('./routes/routed')(app); // File contains all request url declaration.

http.createServer(app).listen(app.get('port'), function() {
console.log('Express server listening on port ' + app.get('port'));
});

Also, logger is storing only http get path not errors.

Please guide me.. Waiting for all valuable reply..

Thanks,
Premkumar M

page 103

app.get('*', function(request, response){
  resquest.end('Hello World');
});

Chapter 4 " server-index "

package.json
"express": "^4.13.4",
"serve-index": "^1.7.3",

var serveIndex = require('serve-index');

app.use('/shared', serveIndex(
path.join('public'), { 'icons': true }
)); // web interface with the folder name (shared), Working

app.use(express.static('public')); //Open the file displaying the message, not working ??

Typo -- P73

Chapter 4 - Working with Middleware, P73
"Summary" section, L8 reads:
"Chapter 4 is a deep dive..."
and should be:
"Chapter 5 is a deep dive..."

Typo -- P7

In page 7, second Tip, line 5.
"...when you need to use some receipe for your project..." --> recipe

ch7 cookies example is not working

1. cd ch7
2. run npm start in the ch7 dir
3. view http://localhost:3000/cookies in browser, it will display
   <!DOCTYPE html><html><head><title></title><link rel="stylesheet" href="/stylesheets/style.css"></head><body><h1>Invalid status code: 0</h1><h2></h2><pre>RangeError: Invalid status code: 0 at ServerResponse.writeHead (_http_server.js:192:11) at ServerResponse._implicitHeader (_http_server.js:157:8) at ServerResponse.OutgoingMessage.end (_http_outgoing.js:573:10) at ServerResponse.send (/Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/node_modules/express/lib/response.js:191:8) at ServerResponse.json (/Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/node_modules/express/lib/response.js:235:15) at ServerResponse.send (/Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/node_modules/express/lib/response.js:134:21) at /Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/app.js:47:19 at Layer.handle [as handle_request] (/Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/node_modules/express/lib/router/layer.js:76:5) at next (/Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/node_modules/express/lib/router/route.js:100:13) at Route.dispatch (/Users/helihua/SourceCode/pro-express.js/proexpressjs/ch7/node_modules/express/lib/router/route.js:81:3)</pre></body></html>

Chapter 3 jsonp

I was working on the example in chapter 3.
I noticed that in your figures you get the response:

/**/ typeof updateView === 'function' && updateView({
"name": "Name",
"publisher": "foo,
"keywords": "foo bar"
});

I was pulling my hair out trying to get that to show up on my DOM. Then I realized that my browser(Windows 10 edge) is downloading a file names jsonp.js with the above response written in it.
(LOL there were 15 by time I found out).

I tried in chrome and then wrote to the DOM like in your figures.

I am still reading the book and working my way through it but could this cause an issue if I or a potential user is using the edge browser and using jsonp?

hi, 1 error in chapter 1

hello.js file

    //the origin code
    app.get('*', function(request, response){
        resquest.end('Hello World');
    });

the above code is not executed. it should correct

    //the origin code
    app.get('*', function(request, response){
        response.end('Hello World');
    });