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Ruby on Rails: Compress the complexity of modern web apps

Safer to_i coercion, custom to_fs formats, and more! This Week in Rails: May 16, 2026 This Week in Rails: May 8, 2026 This Week in Rails: May 1, 2026 Active Record gets better every week Great big Rails World 2026 update: CFP, Corporate Support tickets, workshops Query command for database queries and more Explicit query: and body: kwargs for integration tests and more! Speedup ActiveRecord::LogSubscriber#sql_color and more! This Week in Rails: March 27, 2026 Rails Versions 8.0.5 and 8.1.3 have been released! Rails Versions 7.2.3.1, 8.0.4.1, and 8.1.2.1 have been released! This Week in Rails: March 20, 2026 Validate URI scheme in Action Text and more This Week in Rails: March 6, 2026 Planning Center is the newest Rails Foundation Contributing member Action Text gets Markdown conversion, editor links in devcontainers, and more! BARRA seeks Rails developer Joe Agliozzo is looking for a Rails developer The rise of lighttpd as the alternative web server When longer is better and more is more Snowdevil: First e-tailer on Rails Natural selection for frameworks in Ruby vs Java Address book tutorial in Portuguese Becoming a better programmer with Rails 10 Things Every Java Programmer Should Know About Ruby Really Getting Started in Rails Off the Treadmill, Onto the Rails Rails 0.9.5: A world of fixes and tweaks Rich clients with Rails and XUL
New versions of Rails, optimizer hints, ROFL, and more
David Heinemeier Hansson · 2019-04-02 · via Ruby on Rails: Compress the complexity of modern web apps

Tuesday, April 2, 2019
Posted by dodecadaniel

Hi there! This is Daniel reporting from Brooklyn, NY.

New versions of Rails released

Rails 5.2.3 and Rails 5.1.7 were released last week. Check out the CHANGELOG and upgrade today!

Optimizer Hints and Annotations

These two related PRs were opened within a couple hours of each other. The new optimizer_hints method offers a simple way to include optimizer hints in your queries. The new annotate method offers a simple way to annotate your queries with comments.

The best PR that I saw this year!

This PR elegantly ensures that ActiveSupport::SafeBuffer’s sub, sub!, gsub, and gsub! methods set back references. I learned a lot about Ruby by reading through this code and the review comments.

Stop ROFL

I always enjoy removing code that is no longer needed. It must be especially fun to remove code that includes the comment “I will explain the roflscale so that others will not rm this code.”

Use weak references in the descendants tracker

Nobody wants a memory leak. Keeping track of these references allows us to garbage collect anonymous subclasses.

Advancing to dates before 1001-03-07

I am constantly plagued by bugs related to time. This PR reminds me how complicated time really is.

Allow disabling of console sandbox

Has anybody else ever opened a production console session and fogotten to close it? ✋ Ever done it with the --sandbox flag and caused your database to run out of memory? 😭 Thanks, Rails, for protecting me against myself.

Improved error messages from views

Thinking about contributing to Rails? Check out this PR from a first-time contributor for inspiration.

55 people contributed to Rails in the last 2 weeks, including 6 first-time contributors. You can see the full list of changes here.