How to upgrade rails 2 application to rails 3?

I developed a rails application using rails 2.3.8 version but now how to
upgrade this application in rails 3.0 version.

i think u have to change all its dependencies a/c to -v 3.0

Google for
rails 3 upgrade
and you will get many helpful links (and a few unhelpful ones of course).

Before you start make sure you have full test coverage and that you
are using a version control system (probably git).


Follow this video, may useful to You

Possibly this railscasts would help you:


Also there is another one for upgrading to 3.1 with a 3.0 base, that
could be helpfull too: