Running Ruby on Rails application in debug mode (Linux )

Follow the below steps to run the Ruby on Rails  application in debug using aptana studio

1) Download  Aptana Studio zip file from http://www.aptana.com/products/studio3/download
2) sudo gem install ruby-debug-ide
3) unzip aptana studio and Import the Ruby on Rails application in aptana studio
4) Right Click on Ruby on Rails application and select the debugserver option to run the application in debug mode

Note:above setup is made on Ubuntu 11,12  versions