Installing Ruby on Rails

The installation process for Ruby on Rails is different depending on whether you are running Windows, MacOS, or Linux:

Windows

Install Ruby. To do this, download the file rubyinstaller-1.8.7-p299.exe, execute it, and follow the instructions to install Ruby in the default location (C:/Ruby187). Select the checkbox that adds the Ruby binary directory to your Path.
Install Gems (Ruby's packaging mechanism). To do this, download the zip file rubygems-1.3.7.zip. Inside the zip file is a folder named rubygems-1.3.7; extract this folder to C:\rubygems-1.3.7. Open a cmd window, cd to C:\rubygems-1.3.7, make sure there is a file setup.rb in that directory, then invoke the following command:
```
ruby setup.rb
```
Use the Gem system to install Rails. To do this, invoke the following command:
```
gem install rails -v 2.3.8
```

-v 2.3.8

Install Sqlite3. To do this, download the zip file sqlitedll-3_7_0_1.zip, open the zipped folder, and copy the two files in it to C:/Ruby187/bin. Then use the Gem system to install the Ruby connector:
```
gem install sqlite3-ruby
```
This may print out several warning messages, which you can ignore.

To get started, you need to install XCode, but note that you will NOT be developing in XCode, you just need to have it installed. You can grab the dmg file here: http://developer.apple.com/technology/xcode.html. We recommend the iPhone version if you have any interest in doing iPhone dev at any point. Also, you'll have to sign up for a free ADC account to download XCode.
Since Leopard includes an installation of Ruby on Rails by default, all that is required is updating your installation of Ruby, Gems (Ruby's packaging mechanism) and Rails. Follow the instructions below in order in your terminal. Some people have reported that the Rails update step failed the first time, but succeeded when they tried it again:
```
sudo gem update
    you may see ERRORs all over the place, but really ok
sudo gem update --system
    updates to latest version of ruby
sudo gem install rails -v 2.3.8 --include-dependencies
    Updates Rails to the right version for this class
```
Install Sqlite3. MacOS Leopard already has Sqlite3 pre-installed, so all you need to do is install the Ruby connector:
```
sudo gem install sqlite3-ruby
```
This may print out several warning messages, which you can ignore.

Check out Installing Ruby on Rails in Linux. The instructions include almost everything you should need for the project, except don't install MySQL as described in the instructions. Please note that we have only skimmed this page. We have not tested the instructions! If you have any problems, post on the class newsgroup so that TA's or other students can help you.
Install Sqlite3. We think that the following instructions should work, but we haven't tested them. Download the file sqlite-3.7.0.1.so and copy it to the directory containing the Ruby executable. Then use the Gem system to install the Ruby connector:
```
gem install sqlite3-ruby
```
This may print out several warning messages, which you can ignore.