diff options
| -rw-r--r-- | activerecord/CHANGELOG.md | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index 4489ca1aff..5c0dfa73b6 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,5 +1,45 @@ ## Rails 4.0.0 (unreleased) ## +* Simplified type casting code for timezone aware attributes to use the + `in_time_zone` method if it is available. This introduces a subtle change + of behavior when using `Date` instances as they are directly converted to + `ActiveSupport::TimeWithZone` instances without first being converted to + `Time` instances. For example: + + # Rails 3.2 behavior + >> Date.today.to_time.in_time_zone + => Wed, 13 Feb 2013 07:00:00 UTC +00:00 + + # Rails 4.0 behavior + >> Date.today.in_time_zone + => Wed, 13 Feb 2013 00:00:00 UTC +00:00 + + On the plus side it now behaves the same whether you pass a `String` date + or an actual `Date` instance. For example: + + # Rails 3.2 behavior + >> Date.civil(2013, 2, 13).to_time.in_time_zone + => Wed, 13 Feb 2013 07:00:00 UTC +00:00 + >> Time.zone.parse("2013-02-13") + => Wed, 13 Feb 2013 00:00:00 UTC +00:00 + + # Rails 4.0 behavior + >> Date.civil(2013, 2, 13).in_time_zone + => Wed, 13 Feb 2013 00:00:00 UTC +00:00 + >> "2013-02-13".in_time_zone + => Wed, 13 Feb 2013 00:00:00 UTC +00:00 + + If you need the old behavior you can convert the dates to times manually. + For example: + + >> Post.new(created_at: Date.today).created_at + => Wed, 13 Feb 2013 00:00:00 UTC +00:00 + + >> Post.new(created_at: Date.today.to_time).created_at + => Wed, 13 Feb 2013 07:00:00 UTC +00:00 + + *Andrew White* + * Preloading `has_many :through` associations with conditions won't cache the `:through` association. This will prevent invalid subsets to be cached. |