Better docs, better performance, better Rails!

Past issues

Aug 13 Aug 28

Aug 19 2017

Better docs, better performance, better Rails!

Hello everyone! This is Claudio with a recap of the main commits that made it into rails/rails this week. If you too want to contribute to Rails, this outstanding Active Record issue is a great place to start.

Documentation

Temporarily point to a fork of SDoc

A work in progress to improve the documentation of Rails with a nicer theme, better SEO and faster generation time. Can you spot the difference between the current and the future version?

Minor tweaks in Active Storage documentation

Two weeks ago, Active Storage made it into rails/rails. This week its documentation has been improved to make it ready to ship with Rails 5.2.

Performance

Faster and more readable implementation of Hash#deep_merge

If you want to learn how to use benchmarks to prove that a commit can improve the performance of Rails, this is a great example.

Eager-load controller actions to reduce response time of the first request

The list of available actions for a controller is now eagerly loaded to reduce response time of the first request and the memory footprint when running on forking server like Unicorn.

Bug fixes

Load Parameters configurations on :action_controller only once

This PR fixes a regression introduced in 5.1.3 by which UnpermittedParameters were not raised as expected.

Check :scope input in Uniqueness validator

Without this patch, calling something like validates_uniqueness_of :code, scope: [archived: false] would cause NoMethodError with a trace into AR internals.

Additions