"SourceIndex # everyone is out of date." How to fix?

Question

When I run the Ruby on Rails program, I get a warning:

Note: Gem :: SourceIndex # each is deprecated without replacement. This will be deleted after or after 2011-11-01.

Gem :: SourceIndex #, each of which is called C: /Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/vendor_gem_source_index.rb :. 123

NOTE. Gem :: SourceIndex # each deprecated without replacement. This will be deleted after or after 2011-11-01.

Gem :: SourceIndex #, each of which is called C: /Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/vendor_gem_source_index.rb :. 124

How to establish this right and what does it mean?

I work in a Windows environment with the following configuration:

• Ruby 1.8.7 [i386-mingw32]
• Rails 2.3.11
• gemstone 1.8.8

Answer 1

The deprecation warning comes directly from Rails, as the reverse line notes. The purpose of the warning is to warn you of imminent changes (2011-11-01) in the Ruby Gem class that may affect your Rails application.

As a solution for your Rails 2.3.x application, you can:

• change it to use the bundler ; or
• upgrade it to a newer version of Rails (e.g. 3.0.x).