The Ruby and Rails community linklog
Made a library? Written a blog post? Found a useful tutorial? Share it with the Ruby community here or just enjoy what everyone else has found!
Submit a post
Post Preview
Note: Only the first pargraph is shown on the front page and overly long paragraphs may be broken up.
Run RSpec in parallel with Flatware
Here’s one way how to parallize your test suite with RSpec.
The Ruby Browser War: Playwright vs. Ferrum (2026 Edition)
The New Guard For a decade, Selenium was the king of browser automation. It was slow,… Read more
The GraphQL Goldmine: How to Reverse Engineer APIs for Scraping
The “One Endpoint” Revolution In the old REST world, if you wanted to scrape a user’s… Read more
Ruby devs who use React end up with too much competition from the React community
I have observed that Ruby devs who use React often have a hard time finding a job because too many people know React…
My Rails harness for autonomous AI coding with Claude Code
Built on top of Jesse Vincent’s superpowers. I tweaked the workflow to fit Rails development: added opinionated conventions, stricter reviews and deterministic checks. Read more
🤖 Ruby events this week
🤖 Generated automatically by RubyEventsBot using ruby-libgd. Updated every 7 days. Read more
Need image dimensions from S3 or a CDN?
Need image dimensions from S3 or a CDN? Don’t download the whole file. FastImage reads the header—1-16KB instead of megabytes. 5-199x faster. Read more
How to Use ActiveRecord Without Rails
Very often I find myself writing small Ruby scripts to scrape data, process CSV files, or build a… Read more
biscuit-rails - a GDPR-compliant cookie consent banner for Rails 8
I was looking for a GDPR cookie banner for a number of projects, but all the available options are either abandoned or incompatible with Rails 8, so I wrote my own, with the help of Claude Code - biscuit-rails. Please try it out, all feedback is welcome. You can read more about my motivation for this project here
2D histograms in pure Ruby.
No Python. No stats gem. Just ruby-libgd and math. Read more
Is it Worth Becoming a Rails Developer in 2026? (The Honest Truth)
The “Dead” Language Paradox If you listen to Twitter (or X), Ruby on Rails died sometime… Read more
The tool I wish I had 25 apps ago
Every iOS app I’ve shipped over the last nine years started the same way: a Rails developer with a great web app, users who want it in the App Store, and weeks spent on Xcode, signing certificates, and Swift boilerplate that has nothing to do with the actual product. Read more
How well are the tests covering the code?
Test coverage metrics are one of the tools for evaluating the quality of tests without reading them. Which is kind of relevant in the age of coding agents. So here, a short light intro to 4 different ones: line, branch, path and condition coverage. How well are the tests covering the code?
Seamless PR's size labeling
Tag PR sizes with 0 setup, 0 lag, and no GH action quota usage for free Customization and proactive labeling included Read more
Advanced Domain Modeling Techniques for Ruby on Rails – Part 2
One of the most frequent code smells in Rails is an excessive use of inheritance. A serious drawback from using inheritance to achieve polymorphism is the implicit coupling it creates between parent and child classes. Polymorphism with Strategies
Which of these come from Ruby and which from Rails?
• ‘person’.pluralize • 3.days.ago • params.permit(:name) • [1,2,3].second • before_action :authenticate Read more
Rauversion: an open source platform for independent music communities
We’ve been building Rauversion, an open source platform for independent music labels, artists, and cultural communities. Read more
Glimmer DSL for Web 0.8.3 Preventing Components from Shadowing HTML Elements
Glimmer DSL for Web (Fukuoka Award Winning Ruby-in-the-Browser Frontend Framework for Rails) had a new release in version 0.8.3, which now raises an exception plus a correction hint if the user attempts to define a component or a component slot with a name that shadows an existing HTML element…
Stripe Connect Simplified: Routing Payments in Your Rails App
Building a SaaS where users pay you is easy. But what if you want to build a marketplace? Like… Read more
The analogue programmer in the land of LLMs
Oldschool programmer thoughts on LLMs and the cognitive debt hidden inside convenience. Read more
SVG in Ruby 🚀
Just published: A complete guide to generating scalable, interactive vector graphics. Read more
How I Audit a Legacy Rails Codebase in the First Week
After 50+ engagements I’ve settled on a pretty consistent week-one process for legacy Rails apps. Start with stakeholder interviews (not the code), read three files before running any tools, then use SimpleCov zero-coverage files as a “fear map” for where the real risk lives. The post walks through the full sequence: Gemfile/schema/routes review, security scans, complexity analysis, and how to deliver a triage that actually gets acted on instead of filed away.
CZTop 2.0.0.rc1 — ZeroMQ for Ruby, rewritten
CZTop 2.0.0.rc1 is out. It’s a full rewrite of the CZMQ/ZeroMQ FFI binding — simpler API (plain Array<String> messages), Async fiber support, CURVE encryption, and socket monitoring. 353k msg/s inproc, 49 µs fiber latency. Ships with a ZGuide summary of the 500-page ZeroMQ guide — all the patterns, none of the C. Lots of breaking changes from 1.x — see CHANGES.md. Read more
Accepted at Wroclove.rb 2026: "Building Rails SPAs in Ruby using Glimmer DSL for Web"
For those who missed it, my 3-hour workshop proposal “Building Rails SPAs in Ruby using Glimmer DSL for Web” was accepted at the Wroclove.rb 2026 Ruby Conference, which takes place April 17-19, 2026 in Wroclaw, Poland…
Stop Building Ugly Admin Panels: Why Avo is the Future of Rails Admins
The “Admin Panel” Ticket We all know the feeling. You are building an exciting new SaaS…. Read more