Which are the main things to be considered when migrating from rails 1.x to rails 2.x

Question

Since the arrival of rails 2.3,the migration to new version became a big issue. There might have some things to be taken care on migration.Which r those. Any help is there and which r the advantages of this migration.

Answer 1

It's not free ($9) but Ryan Daigle's Peepcode PDF book is an excellent 80-page guide to Rails 2.1 for Rails 1 users which really helped me when upgrading from 1.x to 2.x:

http://peepcode.com/products/rails-2-pdf

Answer 2

I posted an answer to a similar question. I recommend going there so you can see all of the other answers as well. But I'll duplicate it here for convenience.

---

Check out the official Rails Guides. These should provide a nice overview of Rails (if you are rusty) and are kept up-to-date with the latest versions.

You may want to check out Ryan Daigle's Edge Rails posts which covered features as they were added to the new versions. Use the dates to determine where to start and go through each one. He also has a PDF for $9 which covers upgrading to Rails 2.1.

I have also covered the changes on Railscasts. Check out the various tags for each version to see them: 2.0, 2.1, 2.2, 2.3.

Update: Thoughtbot blog has posted about upgrading to Rails 2.1 and 2.3.2.