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Latest commit cbbbbcc Feb 27, 2017 @eileencodes eileencodes committed on GitHub Merge pull request #28160 from y-yagi/only_load_systemtestcase_if_pum…

Only load SystemTestCase if Puma is defined


Railties – Gluing the Engine to the Rails

Railties is responsible for gluing all frameworks together. Overall, it:

  • handles the bootstrapping process for a Rails application;

  • manages the rails command line interface;

  • and provides the Rails generators core.


The latest version of Railties can be installed with RubyGems:

  • gem install railties

Source code can be downloaded as part of the Rails project on GitHub


Railties is released under the MIT license:


API documentation is at

Bug reports can be filed for the Ruby on Rails project here:

Feature requests should be discussed on the rails-core mailing list here: