Short Ruby Newsletter - edition 161

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

🚀 Tute Costa launched railspilot.ai

📅 Events

📅 Ruby On Rails announced the date for Rails World 2026. Check the blog post for more → Rails World 2026 Update - Here’s what we know

📅 Blue Ridge Ruby announced they’re returning in 2026 🥳 and today 15 December we will find mout more:

👉 All about Code and Ruby

👉 ️Aaron Patterson shared some insights about object allocation in Ruby 4.0 (read the thread here):

👉 A PR from Rosa was merged to Rails about Use a modern approach for cross-site request forgery protection

👉 Avo published a very cool tutorial about Building an Audio Player with StimulusJS

👉 Stefanni Brasil published a new article about Higher-order procedures in Ruby

👉 Hans-Jörg Schnedlitz published a new article about Create a Markdown Editor in Ruby on Rails

👉 Adrianna Chang published a new article about Rails’s Swappable Migration Backend for Schema Changes at Scale

💻 Code Samples

️️💻 Kasper Timm Hansen shared a code snippet showing how to dynamically include ActiveModel attributes

️💻 Stephen Margheim shared a tip on closing <dialog>s with the ' “closedby“ attribute

️💻 Alessandro Rodi shared a piece of functionality that can be default in Rails

️💻 David shared a Rails tip for implementing API token authentication

️💻 Ruby On Rails made an important change with “has_secure_token“ being generated on :initialise by default

️️💻 Svyatoslav Kryukov shared how to use the new alba-inertia gem

️💻 Stefan Wintermeyer is running a Ruby40Advent showing various features of the language and community

️💻 Fabian shared a Codex-generated code sample and asked his community if it's a valid Rails pattern

💻 saeloun.com shared a code sample and article about native composite keys in Rails 8:

️💻 James Kerr shared some ActiveRecords methods

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📐 Thinking about Code Design

️📐️ Jorge Manrubia explained the two types of service objects in DDD

️📐 Marc Köhlbrugge shared GUIDE.md - The Unofficial 37signals/DHH Rails Style Guide

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

💡 Mike Coutermarsh shared about using Rails at Github:

Jared Palmer - SVP of @GitHub, VP CoreAI @Microsoft confirmed:

💡 Lucian Ghinda shared about the new look of Ruby docs on master branch

💡 Ruby On Rails announced new documentation PRs → Active Record Query Interface and Active Storage

❤️ Why Choose Ruby and Rails

❤️ Victoria Melnikova published a new article about Why Evil Martians hosted a Ruby conference in San Francisco

❤️ 𝗡𝗢𝗥𝗔 shared that Rails is becoming the most complete web framework

❤️ Ruby On Rails shared an amazing story about how a migration helped cookpad

❤️ Errol Schmidt shared how Rails is evolving and is easier to develop new projects

🧰 Gems, Libraries, Tools and Updates

🆕 New Gems and Repos

🆕 Rob Zolkos announced a new utility → fizzy-cli - “A command-line interface for the Fizzy API.“

He created a couple of projects to help migration from other tasks management to Fizzy: Migrate GitHub Issues to Fizzy Cards , Migrate Linear issues to Fizzy cards, Migrate Asana Tasks to Fizzy Cards, Convert Product Requirements Documents (PRDs) to Fizzy cards using Claude AI, Migrate Jira Cloud issues to Fizzy Cards and also created a Claude Code skill

🆕 RailsDesigner published a new gem requestkit - "Capture webhooks and send HTTP requests locally. Think webhook.site meets Postman, but living on your machine where it belongs."

🆕 Sam Ruby announced a new filter Ruby2JS Phlex filter

🆕 David Silva published a new project Vanilla Roguelike - “Vanilla is a roguelike game written in Ruby, inspired by the original 1980's Rogue game. It features procedurally generated mazes, player movement, and a flexible architecture based on the Entity-Component-System pattern with an event-driven system for logging and debugging”

🆕 Thibaut Baissac published a repo with Rails 8 AI Agent Suite

🆕 Dmitry Sychev published a new gem llm_classifier - "A flexible Ruby gem for building LLM-based classifiers. Define categories, system prompts, and domain knowledge using a clean DSL. Supports multiple LLM backends (ruby_llm, OpenAI, Anthropic) and integrates seamlessly with Rails."

🧰 Updates

🧰 David Heinemeier Hansson announced that Fizzy now has an API - Add basic API (read the docs here)

🧰 Jet Brains Ruby Mine announced a new release

🧰 Vicente Reig Rincón De Arellano announced a new version of dspy.rb - “The Ruby framework for programming—rather than prompting—language models.“

🧰 Benoit Daloze announced an update for concurrent-ruby - “Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.“

🤝 Related (but not Ruby-specific)

🤝 Staysaasy wrote a tip for individual contributors

🤝 Claude shared a new capability of tasks

🤝 Jen Simmon shared a new release of Safari 26.2:

🤝 Stephen Margheim shared a simple accessibility audit tip

🤝 Simon Willison shared that OpenAI is silently adopting “skills“

More content: 📚 🗞 🎧 🎥 ✍🏾

🗞 Newsletters

🗞 Ruby On Rails published a new edition → 'Tis the season for contributing to Rails

🗞 Hotwire Weekly published a new edition → Week 49 - Vanilla CSS, Fizzy, UI Affordances, and more!

🗞 Ruby Weekly published a new edition → Visualizing what ZJIT does when compiling Ruby

🎧 Podcasts

🎧 Ruby on Rails published a new podcast episode → Jay Tennier: How Testing Platform Rainforest QA Tests Itself

🎧 IndieRails published a new podcast episode → Ernesto Tagwerker - OmbuLabs on AI

🎧 Maintainable Software Podcast published a new podcast episode → Kent L Beck: You’re Ignoring Optionality… and Paying for It

🎥 Videos

🎥 Brad Gessler published a new video → Inheritance

🎥 Beautiful Ruby published a new video → Fizzy SaaS, Fizzy's mysterious cousin & Queen Bee's niece: Read The Friendly Source Code

🎥 Pete Hawkins published a new video → Rails twitter clone - Part 1

🎥 Joe Masilotti published a new video → Missed the Fizzy livestream? Here’s the recap.

🎥 Jorge Manrubia published a new video → How we architect Rails apps at 37signals: a Fizzy tour.

🎥 Dave Kimura published a new video → Cool Things in Fizzy

✍🏾 Articles

What’s new 🆕

🆕 Adrianna Chang published a new article about Rails’s Swappable Migration Backend for Schema Changes at Scale

🆕 Amol Joshi published a new article about Rails Native Composite Primary Keys: A Complete Evolution from Rails 3 to Rails 8

🆕 Radan Skoric published a new article about Why frozen test fixtures are a problem on large projects and how to avoid them

🆕 Daniela Baron published a new article about Sustainable Feature Testing in Rails with Cucumber

🆕 Rails Designer published a new article about More readable integer comparisons in Ruby

🆕 Alexey Varfolomeev published a new article about RubyMine 2025.3: Multi-Agent AI Chat, Rails-Aware MCP Server, Faster Multi-Module Projects Startup, and More

🆕 Stefanni Brasil published a new article about Higher-order procedures in Ruby

🆕 Rob Zolkos published a new article about Fizzy Design Evolution: A Flipbook from Git

🆕 Mario Alberto Chávez published an article about Rails MCP Server: Context-Efficient Tool Architecture | Mario Alberto Chávez

🆕 Josef Strzibny published a new article about Lessons learned from studying Fizzy test suite 

🆕 Rob Zolkos published a new article about Fizzy's Pull Requests: Who Built What and How

🆕 Julik Tarkhanov published a new article about Making Rails Global IDs safer

🆕 Jared White published a new article about The “rv” Tool is Making Swift Progress, Becoming a Must-Have for Rubyists

🆕 Mintbit published a new article about Send Emails in Bulk with deliver_all_later and about Rails 8.1: Open Error Files Directly in Your Favorite Editor

How-TOs 📝

📝 Avo published a new article about Building an Audio Player with StimulusJS

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

📝 Hans-Jörg Schnedlitz published a new article about Create a Markdown Editor in Ruby on Rails

📝 Josef Strzibny published a new article about How to choose the right admin gem for your Rails application

📝 Felice Forby published a new article about Honeybadger deployment tracking for Rails with Kamal and Doppler

Related ✍️

✍️ Obie Fernandez published a new article about What happens when the coding becomes the least interesting part of the work

✍️ Matt Swanson published a new article about My Year in Review: 2025