Hello Everyone! This is Roque bringing the latest from Rails with some help from Kasper.

Featured

This Week’s Rails Contributors

We had 36 awesome contributors to the Rails codebase this week. Check out the active issues over on GitHub if you’d like to see your name here.

Rails 4.2.4 RC1 and 4.1.13 RC1 have been released!

There’s new release candidates, please try them and report any regressions you find, so that the Rails team can fix them before the final release.

Thank you to all contributors for these releases!

New Stuff

Active Record relations come in batches

This week Active Record got a new method that works like find_in_batches but yields relations instead of arrays. It also added a cool delegation API that lets you do something like:

People.in_batches.delete_all('age > 21')

Oh, in case you were wondering – this is pretty much how Skynet works.

Improved

i18n reloading picks up new and deleted files

This patch allows new locale YAML files to be loaded without having to restart the Rails server. It also reloads the available locales when files are deleted.

Active Job assertions returns matched job

The matched job returned by these methods can be used for advanced assertions like:

job = assert_enqueued_with(job: SomeJob) do
  some_business_logic
end
assert_equal 5, job.arguments.second

Spun Off

XML serialization have been moved to a gem

As usage for XML serialization declined, it’s become less of a core concern of Rails. In Rails 5, this feature will be moved to the activemodel-serializers-xml gem.

If you’re still using the XML Serialization feature in your app, you will need to add this to your Gemfile when you upgrade.

That’s a wrap

That’s all for This week in Rails. As always, there are many more changes than we have room to cover here, but feel free to check them out yourself!

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