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| # | Name | Comments | Duration | Released |
|---|---|---|---|---|
| 219 | Active Model | 53 comments | 6 minutes | Jun 21, 2010 |
| 211 | Validations in Rails 3 | 59 comments | 9 minutes | Apr 26, 2010 |
| 209 | Introducing Devise | 116 comments | 10 minutes | Apr 12, 2010 |