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Advanced Node.js Development
Advanced Node.js Development

Advanced Node.js Development: Master Node.js by building real-world applications

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Advanced Node.js Development

Getting Set Up

In this chapter, you'll get your local environment set up for the rest of the book. Whether you're on macOS, Linux, or Windows, we'll install MongoDB and Robomongo.

More specifically, we'll cover the following topics:

  • MongoDB and Robomongo installation for Linux and macOS
  • MongoDB and Robomongo installation for Windows

Installing MongoDB and Robomongo for Linux and macOS

This section is for macOS and Linux users. If you are on Windows, I have written a separate section for you.

The first thing we'll do is to download and set up MongoDB, as this will be the database we will use. We'll be using a third-party service to host our database when we eventually deploy it to Heroku, but on our local machine we'll need to download MongoDB so that we can start up a database server. This will let us connect to it via our Node applications to read and write data.

In order to grab the database, we'll head over to mongodb.com. Then we can go to the Download page and download the appropriate version.

On this page, scroll down and select Community Server; this is the one we'll be using. Also, there are options for different operating systems, whether it's Windows, Linux, macOS, or Solaris. I'm on macOS, so I'll use this download:

If you're on Linux, click on Linux; then go to the Version drop down and select the appropriate version. For example, if you're on Ubuntu 14.04, you can download the correct one from the Linux tab. Then, you can simply click on the Download button and follow along.

Next you can open it up. We'll just extract the directory, creating a brand new folder in the Downloads folder. If you're on Linux, you might need to manually extract the contents of that archive into the Downloads folder.

Now this folder contains a bin folder, and in there we have all of the executables that we need in order to do things such as connecting to the database and starting a database server:

Before we go ahead and run any of them. We'll rename this directory to mongo and then move it into the user directory. You can see that now in the user directory, I have the mongo folder. We'll also create a brand new directory alongside of mongo called mongo-data, and this will store the actual data inside of the database:

So when we insert a new record into the Todos table, for example, that will live in the mongo-data folder. Once you have the mongo folder moved into the user directory and you have the new mongo-data folder, you are ready to actually run the database server from Terminal. I'll go into Terminal and navigate into that brand new mongo folder that is in the user directory, where I currently am, so I can cd into mongo, then I'll cd into the bin directory by tacking it on right there:

cd mongo/bin

From here, we have a bunch of executables that we can run:

We have things such as bisondump and mongodump. In this section, we'll focus on: mongod, which will start up the database server, and mongo, which will let us connect to the server and run some commands. Just like when we type node we can run some JavaScript commands right in Terminal, when we type mongo, we'll be able to run some Mongo commands to insert, fetch, or do anything we like with the data.

First up though, let's start up the database server. I'll use ./ to run a file in the current directory. The file we'll run is called mongod; also, we do need to provide one argument: the dbpath argument. The dbpath argument will get set equal to the path of the directory we just created, the mongo-data directory. I'll use ~ (the tilde) to navigate to the user directory, and then to /mongo-data, as shown here:

./mongod --dbpath ~/mongo-data

Running this command will start up the server. This will create an active connection, which we can connect to for manipulating our data. The last line that you see when you run the command should be, waiting for connections on port 27017:

If you see this, it means that your server is up and running.

Next up, let's open a new tab, which starts in the exact same directory, and this time around, instead of running mongod, we'll run the mongo file:

./mongo

When we run mongo, we open up a console. It connects to the database server we just started, and from here, we can start running some commands. These commands are just to test that things are working as expected. We'll be going over all of this in detail later in this section. For now though, we can access db.Todos, and then we'll call .insert to create a brand new Todo record. I'll call it like a function:

db.Todos.insert({})

Next, inside of insert, we'll pass in our document. This will be the MongoDB document we want to create. For now, we'll keep things really simple. On our object, we'll specify one attribute, text, setting it equal to a string. Inside of quotes, type anything you want to do. I'll say Film new node course:

db.Todos.insert({text: 'Film new node course'})

With your command looking just like this, you can press enter, and you should get back a WriteResult object with an nInserted property, which is short for the number inserted: a value set to 1. This means that one new record was created, and that is fantastic!

Now that we've inserted a record, let's fetch the record just to make sure that everything worked as expected.

Instead of calling insert, we'll call find without any arguments. We want to return every single item in the Todos collection:

db.Todos.find()

When I run this, what do we get? We get one object-looking thing back:

We have our text attribute set to the text that we provided, and we have an _id property. This is the unique identifier for each record, which we'll talk about later. As long as you're seeing the text property coming back to what you set, you are good to go.

We can shut down the mongo command. However, we will still leave the mongod command running because there's one more thing I want to install. It's called Robomongo, and it's a graphic user interface for managing your Mongo database. This will be really useful as you start playing around with Mongo. You'll be able to view the exact data saved in the database; you can manipulate it and do all sorts of stuff.

Over in Finder, we have our mongo-data directory, and you can see that there is a ton of stuff in here. This means that our data was successfully saved. All of the data is in this mongo-data directory. To download and install Robomongo, which is available for Linux, Windows and macOS, we'll head over to robomongo.org and grab the installer for our operating system:

We can click on Download Robo 3T and download the most recent version; it should automatically detect your OS. Download the installer for either Linux or macOS. The one for macOS is really simple. It's one of those installers where you take the icon and drag it into the Applications folder. For Linux, you'll need to extract the archive and run the program in the bin directory. This will start up Robomongo on your Linux distribution.

Since I'm using macOS, I'll just quickly drag the icon over to Applications, and then we can play around with the program itself. Next, I'll open it up inside the Finder. When you first open up Robomongo, you might get a warning like the following on macOS, since it's a program that we downloaded and it's not from an identified macOS developer:

This is fine; most programs you download from the web will not be official since they did not come from the App Store. You can right-click on the downloaded package, select Open, and then click on Open again to run that program. When you first open it, you'll see some screens like the following:

We have a little screen in the background and a list of connections; currently that list is empty. What we need to do is to create a connection for our local MongoDB database so that we can connect to it and manipulate that data. We have Create. I'll click on this, and the only thing we'll need to update is Name. I'll give it a more descriptive name, such as Local Mongo Database. I'll set Address to localhost and the 27017 port is correct; there's no need to change these. So, I'll click on Save:

Next, I'll double-click on the database to connect to it. Inside the tiny window, we have our database. We are connected to it; we can do all sorts of things to manage it.

We can open up the test database, and in there, we should see one Collections folder. If we expand this folder, we have our Todos collection, and from there, we can right-click on the collection. Next, click on View Documents, and we should get our one Todo item, the one that we created over inside the Mongo console:

I can expand it to view the text property. Film new node course shows up:

If you're seeing this, then you are done.

The next section is for Windows users.

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Key benefits

  • • Entirely project-based and practical
  • • Explains the "why" of Node.js features, not just the "how", providing with a deep understanding and enabling you to easily apply concepts in your own applications
  • • Covers the full range of technologies around Node.js – npm, MongoDB, version control with Git, and many more

Description

Advanced Node.js Development is a practical, project-based book that provides you with all you need to progress as a Node.js developer. Node is a ubiquitous technology on the modern web, and an essential part of any web developer’s toolkit. If you're looking to create real-world Node applications, or you want to switch careers or launch a side-project to generate some extra income, then you're in the right place. This book was written around a single goal: turning you into a professional Node developer capable of developing, testing, and deploying real-world production applications. There's no better time to dive in. According to the 2018 Stack Overflow Survey, Node is in the top ten for back-end popularity and back-end salary. This book is built from the ground up around the latest version of Node.js (version 9.x.x). You'll be learning all the cutting-edge features available only in the latest software versions. This book delivers advanced skills that you need to become a professional Node developer. Along this journey you'll create your own API, you'll build a full real-time web app and create projects that apply the latest Async and Await technologies. Andrew Mead maps everything out for you in this book so that you can learn how to build powerful Node.js projects in a comprehensive, easy-to-follow package designed to get you up and running quickly.

Who is this book for?

This book is for anyone looking to launch their own Node applications, switch careers, or freelance as a Node developer. You should have a basic understanding of JavaScript in order to follow this book. This book follows directly on from Learning Node.js Development, but more advanced readers can benefit from this book without having read the first part.

What you will learn

  • • Develop, test, and deploy real-world Node.js applications
  • • Master Node.js by building practical, working examples
  • • Use awesome third-party Node modules such as MongoDB, Mongoose, Socket.io, and Express
  • • Create real-time web applications
  • • Explore async and await in ES7

Product Details

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Publication date : Mar 30, 2018
Length: 592 pages
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Table of Contents

11 Chapters
Getting Set Up Chevron down icon Chevron up icon
MongoDB, Mongoose, and REST APIs – Part 1 Chevron down icon Chevron up icon
MongoDB, Mongoose, and REST APIs – Part 2 Chevron down icon Chevron up icon
MongoDB, Mongoose, and REST APIs – Part 3 Chevron down icon Chevron up icon
Real-Time Web Apps with Socket.io Chevron down icon Chevron up icon
Generating newMessage and newLocationMessage Chevron down icon Chevron up icon
Styling Our Chat Page as a Web App Chevron down icon Chevron up icon
The Join Page and Passing Room Data Chevron down icon Chevron up icon
ES7 classes Chevron down icon Chevron up icon
Async/Await Project Setup Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

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Martin Richard Sanders Nov 05, 2020
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He is putting me on promotion, because of this book.
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David Leonardo Galasso Sep 01, 2021
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Gratefull reading, I've enjoyed every page.Get the match if you are starting back-end from Javascript!Good book
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3xpl0it2c Oct 04, 2018
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Very good,but I think it is very basic...All I have learned is mongoose, async and socket.ioIt does teach well but I expected More.
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Why would I buy this title whent he publisher doesn't include a TOC? Tells a story that isn't very promising.
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A lot of typos on the code. Needs to be updated. Also try on write the code inside a code bracket if its fully done or do piece by piece code not both, it makes it really confusing.
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