Matheus Richard
@matheusrich.bsky.social
👨🏽🍼 Father
🇧🇷 Senior developer @ thoughtbot.
📝 Blogging @ https://tbot.io/blog/matheus
💎 Organizer of http://rubydf.com
🇧🇷 Senior developer @ thoughtbot.
📝 Blogging @ https://tbot.io/blog/matheus
💎 Organizer of http://rubydf.com
Today I learned about Rails' Time.days_in_month and Time.days_in_year. So handy!
November 17, 2025 at 3:12 PM
Today I learned about Rails' Time.days_in_month and Time.days_in_year. So handy!
🎉 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!
- 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!
October 24, 2025 at 6:53 PM
🎉 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!
- 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.
It might not seem much, but it really matters to get that snappy feel.
September 17, 2025 at 9:50 PM
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.
It might not seem much, but it really matters to get that snappy feel.
This is my favorite 404 page
September 16, 2025 at 7:53 PM
This is my favorite 404 page
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: github.com/MatheusRich/...
Well, end_of_life v0.5 was just released and it now supports Rails!
Check it out: github.com/MatheusRich/...
September 10, 2025 at 7:36 PM
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: github.com/MatheusRich/...
Well, end_of_life v0.5 was just released and it now supports Rails!
Check it out: github.com/MatheusRich/...
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).
September 8, 2025 at 2:40 PM
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).
If you wanna use Rails 8.1 today, you can check if there's anything new in the dotfiles, Dockerfile, or the generated authentication system using rails-diff:
github.com/MatheusRich/...
github.com/MatheusRich/...
GitHub - MatheusRich/rails-diff: Compare Rails-generated files with the ones in your repository
Compare Rails-generated files with the ones in your repository - MatheusRich/rails-diff
github.com
September 4, 2025 at 7:13 PM
If you wanna use Rails 8.1 today, you can check if there's anything new in the dotfiles, Dockerfile, or the generated authentication system using rails-diff:
github.com/MatheusRich/...
github.com/MatheusRich/...
The amount of event listeners LLMs suggest when writing Stimulus controllers makes me think most people are not making the most out of Stimulus targets.
September 3, 2025 at 4:18 PM
The amount of event listeners LLMs suggest when writing Stimulus controllers makes me think most people are not making the most out of Stimulus targets.
Zen Browser
Beautifully designed, privacy-focused, and packed with features.
zen-browser.app
September 3, 2025 at 11:59 AM
Reposted by Matheus Richard
Join me at @thoughtbot.com’s Open Summit this year! I’m extremely excited to be part of this event. Even better, it’s *free* and *online*, so I hope I can see you there!
timriley.info/posts/join-m...
timriley.info/posts/join-m...
Join me at thoughtbot’s Open Summit! - Tim Riley
I’m delighted to be joining the thoughtbot Open Summit on 31st October this year! What is Open Summit? From the announcement: “a live, interactive, hands-on day of pairing and solving open...
timriley.info
September 1, 2025 at 12:57 PM
Join me at @thoughtbot.com’s Open Summit this year! I’m extremely excited to be part of this event. Even better, it’s *free* and *online*, so I hope I can see you there!
timriley.info/posts/join-m...
timriley.info/posts/join-m...
This is exciting!
August 26, 2025 at 3:32 PM
This is exciting!
I remember a time where GitHub had a team dedicated to fixing small user pain points. Now everyone complains about it being slow and adding AI features.
What a change.
What a change.
August 19, 2025 at 6:04 PM
I remember a time where GitHub had a team dedicated to fixing small user pain points. Now everyone complains about it being slow and adding AI features.
What a change.
What a change.
TIL about `ActiveRecord.to_param`. I've always defined `#to_param` manually
```
class User < ActiveRecord::Base
to_param :name
end
user = User.find_by(name: 'Fancy Pants')
user.id # => 123
user_path(user) # => "/users/123-fancy-pants"
```
```
class User < ActiveRecord::Base
to_param :name
end
user = User.find_by(name: 'Fancy Pants')
user.id # => 123
user_path(user) # => "/users/123-fancy-pants"
```
August 15, 2025 at 2:53 PM
TIL about `ActiveRecord.to_param`. I've always defined `#to_param` manually
```
class User < ActiveRecord::Base
to_param :name
end
user = User.find_by(name: 'Fancy Pants')
user.id # => 123
user_path(user) # => "/users/123-fancy-pants"
```
```
class User < ActiveRecord::Base
to_param :name
end
user = User.find_by(name: 'Fancy Pants')
user.id # => 123
user_path(user) # => "/users/123-fancy-pants"
```
I forgot to share, but about a month ago I got my first commit into Crystal! You can use this if you're on Crystal >= 1.17
August 7, 2025 at 1:05 PM
I forgot to share, but about a month ago I got my first commit into Crystal! You can use this if you're on Crystal >= 1.17
How hard can extracting an emoji from a string be? Well..
The characters you see hide a more complex reality.
What you see may not be what you get
The characters you see hide a more complex reality.
thoughtbot.com
August 6, 2025 at 12:29 PM
How hard can extracting an emoji from a string be? Well..
Rails now has a `credentials:fetch` command. This is useful to extract a credential and add to Kamal secrets, for example:
KAMAL_REGISTRY_PASSWORD=$(rails credentials:fetch kamal.registry_password)
No need to use rails runner just for that anymore!
github.com/rails/rails/...
KAMAL_REGISTRY_PASSWORD=$(rails credentials:fetch kamal.registry_password)
No need to use rails runner just for that anymore!
github.com/rails/rails/...
Add credentials:fetch command by n-studio · Pull Request #53119 · rails/rails
Motivation / Background
With Kamal 2, secrets are now stored in .kamal/secrets. We are expected to use a 3rd party password manager such as 1password to fetch secrets such as KAMAL_REGISTRY_PASSWOR...
github.com
August 4, 2025 at 4:28 PM
Rails now has a `credentials:fetch` command. This is useful to extract a credential and add to Kamal secrets, for example:
KAMAL_REGISTRY_PASSWORD=$(rails credentials:fetch kamal.registry_password)
No need to use rails runner just for that anymore!
github.com/rails/rails/...
KAMAL_REGISTRY_PASSWORD=$(rails credentials:fetch kamal.registry_password)
No need to use rails runner just for that anymore!
github.com/rails/rails/...
August 1, 2025 at 2:54 PM
Ever wondered how Ruby works under the hood? No need to take a compilers class to get that! You can watch my #RailsConf talk to understand the basics. Along the way you might even write your first programming language.
www.youtube.com/watch?v=ozay...
www.youtube.com/watch?v=ozay...
RailsConf 2025 Ruby Internals: A Guide For Rails Developers by Matheus Richard
YouTube video by Ruby Central
www.youtube.com
July 30, 2025 at 1:50 PM
Ever wondered how Ruby works under the hood? No need to take a compilers class to get that! You can watch my #RailsConf talk to understand the basics. Along the way you might even write your first programming language.
www.youtube.com/watch?v=ozay...
www.youtube.com/watch?v=ozay...
I feel like half of my web problems would be solved if
1. styling select fields was widely available, and
2. select multiple=true had a good default experience (select on click + search + better styles)
1. styling select fields was widely available, and
2. select multiple=true had a good default experience (select on click + search + better styles)
July 28, 2025 at 5:09 PM
I feel like half of my web problems would be solved if
1. styling select fields was widely available, and
2. select multiple=true had a good default experience (select on click + search + better styles)
1. styling select fields was widely available, and
2. select multiple=true had a good default experience (select on click + search + better styles)
🎉 rails-diff v0.6.0 is released! This version includes:
- a `--only` option to only include specific files or directories in the diff
- a new `dotfiles` command to compare dotfiles (configuration files like .rubocop.yml)
Enjoy!
rubygems.org/gems/rails-d...
- a `--only` option to only include specific files or directories in the diff
- a new `dotfiles` command to compare dotfiles (configuration files like .rubocop.yml)
Enjoy!
rubygems.org/gems/rails-d...
rails-diff | RubyGems.org | your community gem host
rubygems.org
July 25, 2025 at 4:23 PM
🎉 rails-diff v0.6.0 is released! This version includes:
- a `--only` option to only include specific files or directories in the diff
- a new `dotfiles` command to compare dotfiles (configuration files like .rubocop.yml)
Enjoy!
rubygems.org/gems/rails-d...
- a `--only` option to only include specific files or directories in the diff
- a new `dotfiles` command to compare dotfiles (configuration files like .rubocop.yml)
Enjoy!
rubygems.org/gems/rails-d...
Reposted by Matheus Richard
I just made an app test suite 3x faster by just using rack test instead of selenium on every system test that didn't need JS interactions!
July 24, 2025 at 5:34 PM
I just made an app test suite 3x faster by just using rack test instead of selenium on every system test that didn't need JS interactions!
I *think* I found a bug on Stimulus (or Chrome?). When clicking on a autocomplete suggestion, it triggers an action even if it doesn't match the KeyboardEvent filters.
Reproduction here: codepen.io/matheusrich/...
Reproduction here: codepen.io/matheusrich/...
Stimulus Bug?
...
codepen.io
July 23, 2025 at 10:12 PM
I *think* I found a bug on Stimulus (or Chrome?). When clicking on a autocomplete suggestion, it triggers an action even if it doesn't match the KeyboardEvent filters.
Reproduction here: codepen.io/matheusrich/...
Reproduction here: codepen.io/matheusrich/...