Book Image

From PHP to Ruby on Rails

By : Bernard Pineda
4 (1)
Book Image

From PHP to Ruby on Rails

4 (1)
By: Bernard Pineda

Overview of this book

Are you a PHP developer looking to take your first steps into the world of Ruby development? From PHP to Ruby on Rails will help you leverage your existing knowledge to gain expertise in Ruby on Rails. With a focus on bridging the gap between PHP and Ruby, this guide will help you develop the Ruby mindset, set up your local environment, grasp the syntax, master scripting, explore popular Ruby frameworks, and find out about libraries and gems. This book offers a unique take on Ruby from the perspective of a seasoned PHP developer who initially refused to learn other technologies, but never looked back after taking the leap. As such, it teaches with a language-agnostic approach that will help you feel at home in any programming language without learning everything from scratch. This approach will help you avoid common mistakes such as writing Ruby as if it were PHP and increase your understanding of the programming ecosystem as a whole. By the end of this book, you'll have gained a solid understanding of Ruby, its ecosystem, and how it compares to PHP, enabling you to build robust and scalable applications using Ruby on Rails.
Table of Contents (15 chapters)
1
Part 1:From PHP to Ruby Basics
8
Part 2:Ruby and the Web

Beyond Hello World

In the previous chapter, we learned how to run (or execute) Ruby code. However, we only focused on the syntax and not the usefulness of the code. The famous Hello World script we write in any language is, by itself, useless, at least from a practical sense. So, let’s start learning how to use some tools to give our scripts a little bit of usefulness.

One useful tool in any language is having a way to verify the version of the programming language that we are currently using. Once we obtain the version, we can stop the execution if the version we are using is incorrect. So, our first step is to get the current Ruby version. Let’s create a file called version_verification.rb with the following code:

# version_verification.rb
puts "We are running Ruby version #{RUBY_VERSION}"

We can run this script on our shell by typing the following command:

ruby version_verifications.rb

It should output something similar to this:

We are running...