Getting Rails 3 Beta Setup

If you use Ruby on Rails, you’ve probably heard by now about the release of the Rails 3.0 betayesterday. There’s been a lot leading up to this release, so naturally most of the rails world is eager to jump in and give it a try. Saturday morning is a great time to get started, so I decided to give it a try.

First off, I wanted to make sure I had a more up to date version of Ruby. Rails 3.0 beta and up will require Ruby 1.8.7 or higher. If you’re running Snow Leopard you probably already have this, but can always do a ruby -v to check your current Ruby version. The easiest way I’ve found to run multiple versions of ruby is using the rvm gem. It handles everything needed for running multiple versions of Ruby, including Rubygems. Just install the gem and go from there:

link:~ adam$ sudo gem install rvm
link:~ adam$ rvm-install
link:~ adam$ mate ~/.bash_profile
link:~ adam$ ruby -v
link:~ adam$ rvm install 1.9.1
link:~ adam$ rvm use 1.9.1
link:~ adam$ sudo gem install tzinfo builder memcache-client rack rack-test rack-mount erubis mail text-format thor bundler i18n
link:~ adam$ sudo gem install rails --pre

At this point, I tried to create a new rails project using the usual rails [projectname], but I ended up getting the following error:

link:research adam$ rails beta
/Library/Ruby/Site/1.8/rubygems.rb:384:in `bin_path': can't find executable rails for rails-3.0.0.beta (Gem::Exception)
	from /usr/bin/rails:19

A lucky comment in another blog showed a fix for this:

sudo gem install railties --pre

After that I was able to create a project the usual way, and start messing around the latest version of Rails. Looking forward to upgrading some existing sites!

link:research adam$ rails testsite
link:research adam$ cd testsite
link:testsite adam$ rails server

This entry was posted on Saturday, February 06th, 2010 at 10:40 pm and is filed under Life. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.