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February 1, 2010

Live Coding Rails 3 Upgrade


Rails release dates plotted with SVG.
Javascript by Geoffrey Grosenbach (using


). Data from

Mike Gunderloy.

Rails 3 Upgrade Handbook PDF

All You Need to Know
Only $12! More info…

NOTE This screencast covers an unreleased
version of Rails 3 run from the source. Rails 3 Release
Candidate 1 has been
and we’ll update this screencast when the final version is available.

For several months people have wondered, “Where can I download a
video that features a developer stumbling through an upgrade of a
Rails 2 app to Rails 3?”

I’m proud to say that an answer is now available!

In only 25 minutes, I convert my news screenshot
from Rails 2.x to Rails 3
(prerelease, from source).

It features the newest bundler (0.9.0.pre), Jeremy McAnally’s
rails-upgrade script, new routes, Arel-based ActiveRecord
queries, and more.

Stay tuned for the explosions at the end!


About the Author

is VP of Open Source at Pluralsight. He previously founded PeepCode and is an all around entrepreneur, developer, designer, teacher and athlete. Follow him on Twitter at @topfunky.