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Rails 3.0.10.rc1 发布

Rails 3.0.10.rc1 已经发布。按照惯例测试候选版，然后报告bug在ruby on rails core mailing list，如果没有问题发现，那么 rails 3.0.10正式版将在8月8日发布。

Rails 3.0.10.rc1 变化如下：

You can find an exhaustive list of changes on github. Here are some notable excerpts:

From ActionPack:

Fixes an issue where cache sweepers with only after filters would have no controller object, it would raise undefined method controller_name for nil [jeroenj]
Ensure status codes are logged when exceptions are raised.
Subclasses of OutputBuffer are respected.
Fixed ActionView::FormOptionsHelper#select with :multiple => false
Avoid extra call to Cache#read in case of a fragment cache hit

From ActiveRecord:

Magic encoding comment added to schema.rb files
schema.rb is written as UTF-8 by default.
Ensuring an established connection when running rake db:schema:dump
Association conditions will not clobber join conditions.
Destroying a record will destroy the HABTM record before destroying itself. GH #402.
Make ActiveRecord::Batches#find_each to not return self.
Update table_exists? in PG to to always use current search_path or schema if explictly set.