Creating a New Rails Project

3 Creating a New Rails Project

The best way to use this guide is to follow each step as it happens, no code or step needed to make this example application has been left out, so you can literally follow along step by step.
By following along with this guide, you'll create a Rails project called blog, a (very) simple weblog. Before you can start building the application, you need to make sure that you have Rails itself installed.

The examples below use $ to represent your terminal prompt in a UNIX-like OS, though it may have been customized to appear differently. If you are using Windows, your prompt will look something like c:\source_code>

3.1 Installing Rails

Open up a command line prompt. On Mac OS X open Terminal.app, on Windows choose "Run" from your Start menu and type 'cmd.exe'. Any commands prefaced with a dollar sign $ should be run in the command line. Verify that you have a current version of Ruby installed:

A number of tools exist to help you quickly install Ruby and Ruby on Rails on your system. Windows users can use Rails Installer, while Mac OS X users can use Tokaido.

$ ruby -v ruby 2.0.0p353

If you don't have Ruby installed have a look at ruby-lang.org for possible ways to install Ruby on your platform.
Many popular UNIX-like OSes ship with an acceptable version of SQLite3. Windows users and others can find installation instructions at the SQLite3 website. Verify that it is correctly installed and in your PATH:

$ sqlite3 --version

The program should report its version.
To install Rails, use the gem install command provided by RubyGems:

$ gem install rails

To verify that you have everything installed correctly, you should be able to run the following:

$ bin/rails --version

If it says something like "Rails 4.1.1", you are ready to continue.