Rails 2.2 was released earlier today, so you may be tempted (as indeed I was) to install it right away and play with the new features (such as Array#forty_two ) Well, there are a few things you need to be aware of before you start the update process. One is you must have rubygems 1.3.1 installed to use rails. The default way to do this is with

sudo gem update --system

However, there is a problem with updating rubygems this way when you don’t have rubygems-update installed. You can get around this by using

sudo gem install rubygems-update
sudo update_rubygems

After updating rubygems, install rails 2.2 with

sudo gem install rails

and you should have the new version of rails.

If you have an existing project, cd to that project directory and

rake rails:update 

to update your javascript, scripts, and configs. This should get you running on the new version of Ruby on Rails.

Tags: ruby rails gems update 2.2