How can I install Ruby on Rails 3 on OSX?

Question

I got a White Macbook and I have to go to a conference in 10 hours but I\'m having a lot of problems.

First, I wanted to have Rails 3, so I used MacPorts to install

Answer 1

Based on your question and your responses to some of the answers, it sounds like you're not using the MacPorts version of Ruby. You should make sure that /opt/local/bin is in the front of your $PATH, before /usr/bin. Also, you should install RubyGems via MacPorts (sudo port install rb-rubygems) and make sure you're using the MacPorts gem. Then install Rails using the MacPorts gem.