rails2.2 extra, dynamic finder

Rails2.2 release note
railscast rails2.2 extra
javaeye rails 2.2 release note

5.4 New Dynamic Finders<br />>> User.find(123)<br />ActiveRecord::RecordNotFound: Couldn't find User with ID=123<br /> from /usr/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:1528:in `find_one'<br /> from /usr/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:1511:in `find_from_ids'<br /> from /usr/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:590:in `find'<br /> from (irb):1<br />>> User.find_by_id(123)<br />=> nil<br />#Rails 2.2 多了下面這個<br />>> User.find_by_id!(123)<br />ActiveRecord::RecordNotFound: ActiveRecord::RecordNotFound<br /> from /usr/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:1814:in `find_by_id!'<br /> from /usr/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:1800:in `send'<br /> from /usr/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:1800:in `method_missing'<br /> from (irb):3<br />>> <br />