Book Image

Cloning Internet Applications with Ruby

By : Chang Sau Sheong
Book Image

Cloning Internet Applications with Ruby

By: Chang Sau Sheong

Overview of this book

Most users on the Internet have a few favorite Internet web applications that they use often and cannot do without. These popular applications often provide essential services that we need even while we don’t fully understand its features or how they work. Ruby empowers you to develop your own clones of such applications without much ordeal. Learning how these sites work and describing how they can be implemented enables you to move to the next step of customizing them and enabling your own version of these services.This book shows the reader how to clone some of the Internet's most popular applications in Ruby by first identifying their main features, and then showing example Ruby code to replicate this functionality.While we understand that it connects us to our friends and people we want to meet up with, what is the common feature of a social network that makes it a social network? And how do these features work? This book is the answer to all these questions. It will provide a step-by-step explanation on how the application is designed and coded, and then how it is deployed to the Heroku cloud platform. This book’s main purpose is to break up popular Internet services such as TinyURL, Twitter, Flickr, and Facebook to understand what makes it tick. Then using Ruby, the book describes how a minimal set of features for these sites can be modeled, built, and deployed on the Internet.
Table of Contents (13 chapters)

Deploying the clone

There are a few ways to run the Sinatra web application. The simplest is probably to run it off the command line. To do this, we need to set up the database. We assume that for this application you would have installed MySQL. At the command line go into the MySQL interactive command console:

$ mysql –u <username> -p <password>

Then just execute the following command:

mysql> create database tinyclone;

This will just create the database. Next, go into IRB and run this command:

> require 'tinyclone'

This will require the necessary classes for creating the database tables. Next, just run this command:

> DataMapper.auto_migrate!

This will create the tables for the application. To run the application, we just need to run this at the command line:

$ ruby tinyclone.rb

Then, go to http://localhost:4567/ and you will see the running application:

This is how the info page looks:

Alternatively we can also deploy to Heroku, the Ruby cloud-computing platform. Deploying...