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Updated 3.0 release notes guide to inform issues with unsupported Rub…

…y versions.
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commit 6e4e95b7f9c163213dd4b5d92b2f4f3b17a3d1f3 1 parent 79e5e79
Anil Wadghule authored May 13, 2010
2  railties/guides/source/3_0_release_notes.textile
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@@ -36,6 +36,8 @@ h4. Rails 3 requires Ruby 1.8.7+
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 Rails 3.0 requires Ruby 1.8.7 or higher. Support for all of the previous Ruby versions has been dropped officially and you should upgrade as early as possible. Rails 3.0 is also compatible with Ruby 1.9.2.
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+TIP: Note that Ruby 1.8.7 p248 and p249 has marshaling bugs that crash Rails 3.0.0. Ruby 1.9.1 outright segfaults on Rails 3.0.0, so if you want to use Rails 3 with 1.9.x, jump on 1.9.2 trunk for smooth sailing.
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 h4. Rails Application object
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 As part of the groundwork for supporting running multiple Rails applications in the same process, Rails 3 introduces the concept of an Application object. An application object holds all the application specific configurations and is very similar in nature to +config/environment.rb+ from the previous versions of Rails.

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