#15 Rails released; Rails Upgrade Case Study; ActiveModel Errors changes; Ruby 2.7 additions; Running fewer tests.

Happy Wednesday!

Here is issue #015 of our newsletter, where we collect news and tools that we find interesting for your Rails project.

1. Rails has been released: This new version contains an important security patch, so make sure to upgrade! 🔒

2. Upgrading a Large Rails Application from Rails 5.0 to 5.1: Our latest case study after working on a large Rails 5.0 to 5.1 upgrade 🚀.

3. Rails 6.1's ActiveModel Errors Revamp: Some of the ActiveModel Errors changes that will come with Rails 6.1.

4. Ruby 2.7 adds Enumerable#filter_map: The new filter_map method filters and map the enumerable elements within a single iteration 💎.

5. Spark Joy by Running Fewer Tests: An interesting article by Shopify about running fewer tests.

We hope you find these links useful. Feel free to forward it to your friends! ;)

Have a nice week and stay safe!

The FastRuby.io team.

Don't wait to bring your Rails application up to date.

We will get on a quick call and recommend a couple of options to start upgrading your Rails app.