Introduction to the Ruby on Rails framework

In this section, we are going to learn how to create a simple Ruby on Rails program. Rails is a popular framework used by many Ruby developers, and I personally have the majority of my Ruby applications built on it. As opposed to the Sinatra (refer to the Sinatra web framework development section) framework, which prides itself on being lightweight, Rails has a large number of conventions that you'll need to learn in order to build fully featured applications. In order to learn those conventions and how to build Rails applications, go through these courses: Learn Rails from Scratch (https://rails.devcamp.com/trails/learn-ruby-on-rails-from-scratch) for basic understanding and theRails Code Along (https://rails.devcamp.com/trails/rails-bdd-tdd-course) course for professional Rails development.

Before we go into the code example, ensure you have Rails installed on your system. Like the Sinatra framework, Rails is a Ruby gem, and there are quite a...