Short Ruby Newsletter - edition 162

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Table of Contents

• 🚀 Launches and discounts

• 📅 Events

• 👉 All about Code and Ruby

• 🧰 Gems, Libraries, Tools and Updates

• 🤝 Related (but not Ruby-specific)

• More content: 📚 🗞 🎧 🎥 ✍🏾

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🚀 Launches and discounts

🚀 Hiroshi Shibata announced that Ruby web page got a new look 🥳 → Ruby 

They also published an article going a bit into the ideas that were behind this redesign Redesign our Site Identity

🚀 Raul launched CalmCompanies.club → Find your dream job at a company that actually cares. If you want to read the story behind read Raul’s post

🚀 Rob Zolkos launched O'Saasy Directory

🚀 Alex Shapalov launched ActiveRabbit

🚀 Karim Rails & React Full Stack launched RailsFullStack

🚀 Mario Alberto Chávez launched Maquina - open-source tooling for developers and the first components are Components UI:

📅 Events

📅 Blue Ridge Ruby announced that they’re returning next year and ticjkets are available at https://blueridgeruby.com/#register

📅 Ruby Kaigi is looking for speakers for next year's event. If you're interested, submit your proposal here → RubyKaigi 2026 CFP

📅 Rbq Conf started ticket sale for the next year event. For more details check → RBQ TICKETS

👉 All about Code and Ruby

👉 Yui Naruse announced a new Ruby version → Ruby 4.0.0 preview3

You should also read this article from Nithin Bekal about What's new in Ruby 4.0

👉️ Takashi Kokubun announced the release of Ruby 3.4.8

👉 Update your Zeitwerk → Xavier Noria announced a new version of zeitwerk - “Efficient and thread-safe code loader for Ruby“

👉Ryan Davis  announced a big release for Minitest → minitest version 6.0.0 has been released!

👉 Marco Roth received the 2025 Rails Luminary → Congrats Marco Roth: 2025 Rails Luminary - well deserved!

Marco also wrote an article after receiving the award → Giving Back to the Rails Community

👉 Matt Swanson and Stephen Margheim published a new article about Beautiful Rails confirmation dialogs (with zero JavaScript)

👉 Maciej Mensfeld submitted two PRs for Ruby:

• Optimize Float#to_s with Ryu algorithm to achieve 2-4x performance

• Add Eisel-Lemire algorithm for faster String#to_f

And he wrote a good article about how he approached this optimisation → Ruby Floats: When 2.6x Faster Is Actually Slower (and Then Faster Again)

👉 Jeffrey Hardy, Fernando Olivares and Kimberly Rhodes from 37 Signals published a video exploration about The Rails Delegated Type Pattern - Watch the full video on Youtube here

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💻 Code Samples

️💻 ️Stefan Wintermeyer shared an interesting facts about “Array#each”, “#map” and “#select” - they are doling a series about Ruby:

️💻 Kyrylo Silin shared a Rails tip about SVGs in views. Gem used for this tip is → inline_svg

️💻 Avi Flombaum shared a useful tip for the Rails console to quickly get a record:

️💻 Saeloun shared how to use bin/ci in Rails. For more details, you can check the blog post → Rails 8.1 introduces bin/ci to standardize CI workflows with a new DSL

️💻 Jorge Manrubia shared examples of Rails' expressive syntax

️💻 JP Camara showed how to dinamically adjust retry behavior in Sidekiq

💻 Saeloun shared a code sample about Rails.event. For more details, check the blog post version → Rails 8.1 Introduces Structured Event Reporting with Rails.event

🖥️ Bradley Schaefer shared a helper method to make Ruby procs readable in test output

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📐 Thinking about Code Design

️📐 Errol Schmidt shared some updates on various Rails versions

️📐 Matt Swanson shared a product development strategy

️📐 Maciej Mensfeld shared how micro-optimizations can make a difference. You can check here the optimization made by kyanagi → Speed up Set#flatten

️️📐 David Heinemeier Hansson shared that Basecamp's test suite runs in 48 seconds on SQLite, down from over a minute with MySQL

📐 Maciej Mensfeld made an improvement on Date.ordinal and Date.commercial. For more details, you can check his PR → Optimize Gregorian date conversions with Neri-Schneider algorithm

💡Around code (news, findings, books, and more - all about Ruby)

👉️ Ruby On Rails celebrated Ruby's 30th anniversary 🥳 

❤️ Why Choose Ruby and Rails

❤️ Sumim reflected on Ruby's 30th anniversary and its object-oriented design principles

🧰 Gems, Libraries, Tools and Updates

🆕 New Gems and Repos

🆕 Kyrylo Silin published a new repo https://github.com/kyrylo/weuserails.com

🆕 Kieran Klaassen announced a new Claude Skill → dhh-rails-style skill

🆕 Rob Zolkos made a new bash script → csscaffold - “This is not the greatest CSS framework in the world. It's just a tribute.“

🆕 Cengiz Gürtusgil completed the migration of FastRetro to Rails → fastretro - “Retrospectives done right. Fast, straightforward and open source.“

🧰 Updates

🧰 David Heinemeier Hansson announced a new update for Rails → Rosa: Use a modern approach for cross-site request forgery protection

🧰 Jorge Manrubia added paid monthly subscriptions to Fizzy. Full implementation details can be visualized here → Add monthly subscriptions

🧰 Obie Fernandez announced a new version of raix - “Ruby AI eXtensions“

🧰 Kevin Newton announced a new version of prism - “Prism Ruby parser“

🧰 Jorge Manrubia announced a new feature for Lexxy → Tables

🧰 Jeremy Evans announced a new version of rodauth - “Ruby's Most Advanced Authentication Framework“

🧰 Jeremy Evans announced a new version of m - “A Test::Unit runner that can run tests by line number.“

🤝 Related (but not Ruby-specific)

🤝 Stephen Margheim talked about the “no build“ philosophy

🤝 Corey Quinn shared his opinion on microservices

🤝 José Valim put into perspective these two abstractions: skills and subagents from Claude

🤝 Stephen Margheim discussed the drawbacks of common SVG icon approaches

🤝 Brian Bailey shared about how product management is done at Basecamp

🤝 Stephen Margheim shared a CSS tip for adding breadcrumb separators using the “::after” pseudo-element

🤝 Open Ai Developers announced that Codex supports skills

🤝 Gavin Morrice shared about the importance of encapsulation

More content: 📚 🗞 🎧 🎥 ✍🏾

🗞 Newsletters

🗞 Matt Solt published a new edition → Ruby AI News - December 19th, 2025

🗞 Ruby Weekly published a new edition → It's the final issue of 2025 - maybe!

🗞 This Week in Rails published a new edition → Rails Luminary, modern approach to CSRF and more

🎧 Podcasts

🎧 Pablo published a new podcast episode → 26 - On OOP with Tim and Rob

🎧 The Bike Shed published a new episode → 485: HTTP Basic Auth

🎧 Remote Ruby published a new episode → Jumpstart Pro Evolution - Streamlining Rails Development

🎥 Videos

🎥 37signals published a new video → The Rails Delegated Type Pattern with Jeffrey Hardy

🎥 Jorge Manrubia published a new video → Addressing assorted Rails questions about Fizzy: testing, fixtures, AI, the view layer, and more.

✍🏾 Articles

What’s new 🆕

🆕 Andrey Samsonov published a new article about Notes on direct and resolve in Rails routing, via Fizzy

🆕 Sharon Rosner published a new article about Threads vs Fibers - Can't We Be Friends?

🆕 Vladimir Dementyev published a new article about AnyCable, Rails, and the pitfalls of LLM-streaming

🆕 Michał łęcicki published a new article about How LOAD_PATH works in Ruby

🆕 André Arko published a new article about Why are exec and run so confusing?

🆕 Giménez Silva Germán Alberto published a new article about Testing at scale eventually stops being a tooling problem and becomes a prioritization

🆕 Greg Molnar published a new article about Customizing Omarchy with Ruby

🆕 Jijo Bose published a new article about Rails 8.1 introduces bin/ci to standardize CI workflows with a new DSL 

🆕 Amol Joshi Saeloun Blog published a new article about Rails 8.1 Introduces Structured Event Reporting with Rails.event

🆕 Ben Sheldon published a new article about Tricks to work around nested form elements, for Rails

🆕 Justin Toniazzo published a new article about The Arrange/Act/Assert pattern

How-TOs 📝

DevelClan published a new article about The Open-Closed Principle

Rails Designer published a new article about Add snow to your app with Stimulus

Related ✍️

Dave Mosher published a new article about Anyone can code: Software Is having Its Ratatouille moment