Re:Rails 3.1 beta 1 released
by zaius on Thursday May 05, 2011 @12:13AM
(#2516147)
Doesn't look like they've put together an official changelog yet, but the major changes off the top of my head would be jQuery, Coffeescript, sass, sprockets, css sprites, flushing & deprecation of rails 2 finders.
[ Parent
| on HN ]
A few niceties:
1. Console shows SQL queries right there.
2. The file_field automatically adds :multipart => true to the enclosing form.
3. Newer Migrations - There is a "change" method now which can be used to write only the "up" part of the migration and Rails will automatically reverse when a migration is rolled back.
Re:Rails 3.1 beta 1 released
by MartinMond on Thursday May 05, 2011 @12:55AM
(#2516233)
IMO the most important improvement is the IdentityMap
I'm very much looking forward to making use of the associations rewrite by Jon Leighton (http://jonathanleighton.com/).
Nested has-many:through relationships are a go! :)
Re:Rails 3.1 beta 1 released
by pdelgallego on Thursday May 05, 2011 @03:26AM
(#2516519)
Care to explain? I haven't hear about it.
The IdentityMap makes sure that there is only 1 ActiveRecord instance for a given row in the database.
This basically means that calling Article.find(3) and Comment.where(:article_id => 3).first.article both return the same instance.
http://edgerails.info/articles/what-s-new-in-edge-rails/2011... is a good synopsis of IdentityMap.
Oh, it is in finally? Exciting!
I know this isn't reddit, and I know it isn't welcome on news.yc... but
... that's what she said.
I've gathered up the changelog entries into a gist: https://gist.github.com/958283