I am working on rails 2.3.4 . As rails new version rails 3 has arrived , I want to know which are the major changes rails3 has?
Did you check the release notes?
If you're looking for more Rails 3 info, you could start here.
http://weblog.rubyonrails.org/2010/2/5/rails-3-0-beta-release/
There’s plenty to get excited about here. A few of the headliner features are:
- Brand new router with an emphasis on RESTful declarations
- New Action Mailer API modelled after Action Controller (now without the agonizing pain of sending multipart messages!)
- New Active Record chainable query language built on top of relational algebra
- Unobtrusive JavaScript helpers with drivers for Prototype, jQuery, and more coming (end of inline JS)
- Explicit dependency management with Bundler
My Five Favorite Things About Rails 3
Google "rails 3"
From rubyonrails.org blog
- Brand new router with an emphasis on RESTful declarations
- New Action Mailer API modelled after Action Controller (now without the agonizing pain of sending multipart messages!)
- New Active Record chainable query language built on top of relational algebra
- Unobtrusive JavaScript helpers with drivers for Prototype, jQuery, and more coming (end of inline JS)
- Explicit dependency management with Bundler
yehuda Katz features list on rails 3 will give and here is the list on rails-3 to learn
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