New Rails releases

The first beta release for 5.1.0 is out with some love towards JavaScript, System Tests, Encrypted Secrets and more!
There is also a new stable release for 4.2.8 and a release candidate for 5.0.2

Eileen joins Rails core

We’re proud to welcome Eileen M. Uchitelle to Rails core!

This week's Rails Contributors

33 developers contributed to Rails this week. If you want to be part of this team, look at the issues list and make a contribution!

Custom url helpers and polymorphic mapping

This pull request introduces support for custom url helpers and defining custom polymorphic mappings in routes.rb

Capybara Integration with Rails (AKA System Tests)

Rails has a built in integration with Capybara now which makes writing system tests easier, since all the setup is handled by Rails. For more details read the write-up on the pull request.

Encrypted secrets support

Rails introduces secrets encryption which is inspired by the Sekrets gem.
It worth noting here that, some improvements to the crypto is on the way too.

Include JobID in all Active Job info logs

Earlier the JobID wasn't logged when a job started or ended performing, but that's not the case anymore, making debugging of job related issues easier.

Add missing gzip footer check in ActiveSupport::Gzip.decompress

From now on ActiveSupport::Gzip.decompress checks the CRC in the gzip footer.

Allow 3-level configs to group database connections by environment

If you have multiple database connection per environment, you can group your config by the environment. Check this comment for an example.

Delegate to `scope` rather than `merge!` for collection proxy

A performance improvement by not using merge! when it is not necessary.

Preload to_datetime before freezing a TimeWithZone instance

After freezing an ActiveSupport::TimeWithZone instance, it is not possible to call to_datetime because the value is cached in an instance variable. To avoid this issue, the instance variable is preloaded before the freeze occurs.

HashWithIndifferentAccess#compat nil issue fix

HashWithIndifferentAccess#compact returned nil earlier when the hash didn't contain nil values in it. This PR fixed the problem.

Deprecate using `quoted_id` in quoting / type casting

Originally quoted_id was used in legacy quoting mechanism. Now we use type casting mechanism for that hence quoted_id is deprecated.