🔖 Bookmarks

In this post, we'll build a Markdown editor using Rails.

A step-by-step path to validate your idea fast by defining the problem, testing assumptions, prototyping the critical flow, and shaping a focused MVP you can learn from.

Master Value Objects in Ruby using the modern Data.define class. Learn about immutability, value equality, and how to eliminate boilerplate code for cleaner, safer domain modeling.

A guide to using the ActionMailer after_deliver callback to log emails sent from your Ruby on Rails application

This is my personal site, where I write about Ruby, programming, and any of my varied fascinations.

As Ruby and Rails developers, we often rely on the same familiar set of methods to get things done. The same set of operations are more or…

The post stuck with me. Over the past year and a half, 37signals has released two more products (Writebook and Fizzy) built on the same nobuild philosophy. I wanted to know if these patterns held up. Had they evolved?

Learn how custom elements work in Rails by building an optimistic form. From simple counters to instant UI updates, understand when to use custom elements over Stimulus controllers.

Not a Medium Member read it here…

A code prototype changes everything. When you prototype in code, the thing you are testing is real. It works in the browser. It works on any device. It responds to real-world variables.

Shipping new features on legacy Rails applications requires deep codebase context. The rails-mcp-server gem closes the gap between AI agents and your Rails projects, enabling more relevant code analysis and context aware refactoring suggestions. Whether you're dealing with tech debt in a brownfield application or building new greenfield features, this tool can help you move faster with confidence.

Should a Ruby class do just one thing? Explore the Single Responsibility Principle, cohesion, and when to split classes through practical examples.

Stop waiting for GitHub Actions. Rails 8.1's local CI runs your tests in seconds on your own machine. Here's how it works.

Technical deep-dive into the design decisions that make Broadcast a truly self-hostable Rails application.

A new extension to Minitest Expectations by yours truly is the perfect illustration for this philosophy of programming.

As developers, we’re living in a time where building applications from scratch is easier than ever, thanks to AI tools like Claude Code. Our…

I see some common pitfalls when people try to do Shape Up "by the book." There are things in the book that are Basecamp-specific or often misunderstood, and teams who successfully adopt Shape Up route around them.

Lately, I've been reminded of the heady days of my agile youth by how often I've found myself asking, "how will we test this?" As I've mentioned…

Combining finest craftsmanship with elegant design to ship innovative digital experiences.

Last week, I wrote about my experience working with the team at Cloud Four, and in particular some of their great practices around PR management. Today, I wanted to talk specifically about a habit my friend Gerardo Rodriguez got me into: reviewing your own pull request. It’s pretty simple. When you create a pull request in GitHub, click on the Files changed tab, and scroll through the diff. Anywhere you’ve done something new that’s not already explained by in-code comments, add a comment in the GUI about what you did and why.

Fully functional OTP entry may be easier than you think.

Styling, UX, validation

On the benefits of using the default RESTful actions to prevent controllers from becoming too big and confusing.

Open source maintainers are getting more contributions than ever, thanks to AI-assisted coding. Here's how GitHub Copilot Code Review can help.

A well-designed API feels invisible, it just works. Behind that simplicity lies a set of consistent design principles that make APIs predictable, secure, and scalable.