A toolkit for building modeling frameworks like Active Record and Active Resource. Rich support for attributes, callbacks, validations, observers, serialization, internationalization, and testing.
Required Ruby Version
>= 1.8.7
Required Rubygems Version
> 1.3.1
Authors
David Heinemeier Hansson
Versions
- 8.1.3 March 24, 2026 (69.5 KB)
- 8.1.2.1 March 23, 2026 (69 KB)
- 8.1.2 January 08, 2026 (69 KB)
- 8.1.1 October 28, 2025 (69 KB)
- 8.1.0 October 22, 2025 (69 KB)
- 3.0.6.rc2 March 31, 2011 (37.5 KB)