A toolkit for building modeling frameworks like Active Record. Rich support for attributes, callbacks, validations, serialization, internationalization, and testing.

Required Ruby Version

>= 2.2.2

Required Rubygems Version

> 1.3.1

Authors

David Heinemeier Hansson

Versions

  1. 8.1.4 September 24, 2026 (70 KB)
  2. 8.1.3.1 July 29, 2026 (69.5 KB)
  3. 8.1.3 March 24, 2026 (69.5 KB)
  4. 8.1.2.1 March 23, 2026 (69 KB)
  5. 8.1.2 January 08, 2026 (69 KB)
  6. 5.0.0.beta4 April 27, 2016 (51.5 KB)
Show all versions (463 total)

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