Generating Our First Rails App

Now that you've been introduced to the theory concerning Ruby on Rails, it's time for us to create our first Rails application and learn about the anatomy of a Rails app.

Rails commands are built-in scripts that help to speed development by handling most of the everyday tasks encountered in day-to-day development. Some popular ones are listed here:

• rails new app_name

  This generates a new Rails application with a file structure for the Rails application.

• rails server

  This starts a web server named Puma to host a Rails application. This application, by default, is served on localhost port 3000. Puma is a web server that comes prepackaged with Rails. It's best suited for local development.

• rails console

  This helps you interact with the Rails application using your Terminal. The Rails console is a nifty tool that uses IRB. It's a fast way to test your code for a Rails application.

• rails test

  By default, Rails comes...