mastodon 4.8.0-nightly.2026-10-06🇧🇷 Senior developer @ thoughtbot.
📝 Blogging @ https://tbot.io/blog/matheus
💎 Organizer of http://rubydf.com
🎉 end_of_life 1.0.0.alpha is released! It includes:
- Macos install via homebrew
- Support for scanning EOL Node.js versions
- Support for detecting versions from `mise.toml`.
- A new `check` command to check if specific product releases are EOL
- A revamped CLI
Stay updated!
Just shaved 200-250ms from a CLI app by just requiring dependencies only when they're needed.
It might not seem much, but it really matters to get that snappy feel.
Did you know that Rails 7.1 stops receiving security updates in 3 weeks? Wished that you had a tool that would inform you about this kind of stuff?
Well, end_of_life v0.5 was just released and it now supports Rails!
Check it out: https://github.com/MatheusRich/end_of_life/
If touching production data gives you the shivers, this talk is for you.
At @tropicalonrails, I shared some practical ways to make production data changes safer, calmer, and less scary:
Nice addition in Rails: now when validates_uniqueness_of fails, you'll be able to access the ID of the record that caused the conflict
https://github.com/rails/rails/pull/55826
Just deleted ~1.6k LOC and ~770 KB of JS by replacing a chart library (and all of its deps) with a Ruby helper that renders the charts as plain HTML/CSS. CSS Anchor Positioning made this basically JS-free.
Inspired by @nateberkopec@mastodon.social, I wrote about why and how you should enable MFA for your gems!
If you don't have any gems, this can be one of the easiest open-source contributions you can make! Check it out:
https://thoughtbot.com/blog/lets-enable-mfa-for-all-ruby-gems
No one sets out to write a slow test, and yet it happens. Prevent slow tests from creeping into your test suite again! Tests are not enough, we need *fast* tests!
Here's one of those things that are easy to miss on code review and will make your tests super slow. Good news: it's easy to fix!
https://thoughtbot.com/blog/combine-capybara-selectors-to-avoid-the-sequential-timeout-trap
Today I learned about Rails' Time.days_in_month and Time.days_in_year. So handy!
TIL about Git LFS: An open source Git extension for versioning large files
This is my favorite 404 page
I've hacked the first version of end_of_life in a weekend. I had limited time, so I decided to only support Ruby. It served me well for years, but I thought it was time to expand support for other tools (Rails, Node, Python, databases, etc).
The code was not written in a generic way, so I followed Kent Beck's advice and started to make the change easy.
It took a diff of +1160/-927 , and it was mostly backwards compatible. Luckily I had tests to ensure nothing was broken.
