RubyFlow

From a talk at Ruby SUR to a full write-up:

Tue, 21 Apr 2026 02:40:18 +0000

https://rubystacknews.com/2026/04/20/generating-thousands-of-maps-per-minute-in-ruby/ Building maps in Ruby, without external tools. I explain the approach behind ruby-libgd + libgd-gis 👇 #ruby #gis #opensource

How Turbo 8 Morphing Makes Rails Frontend Development Feel Like Magic

Mon, 20 Apr 2026 23:22:50 +0000

When Hotwire first came out, it felt like a superpower. We could finally update our web pages without…

How to build a platform of agents

Mon, 20 Apr 2026 22:38:56 +0000

This post introduces a pattern where a user can have many agents, and an agent can be specialized in a particular domain. An agent can have tools, and even skills. Its a powerful technique for building serious AI applications. Based on ActiveRecord.

How to Port Legacy Rails Applications to Propshaft

Mon, 20 Apr 2026 20:30:53 +0000

Over the years, I’ve dealt with my fair share of Sprockets problems and then some - I do not, I must admit, mourn its replacement as a default asset pipeline for Rails.

Let It Slop: A New Approach to Modularity in the Age of AI Code Generation

Mon, 20 Apr 2026 13:56:09 +0000

A practice-backed proposal on how we should rethink modularity in Rails applications in the time of code generation tools. With a look back into why and how we did modularity in programming up until now. This is my lightning talk from Wroclove.rb conference turned into a full blogpost.

♻️ Re-sharing an old demo : still relevant. Ruby-LibGD 3D

Mon, 20 Apr 2026 02:57:00 +0000

https://rubystacknews.com/2026/02/06/a-quick-demo-of-ruby-libgd-v0-2-4/

llm.rb continues to innovate and push boundaries

Mon, 20 Apr 2026 02:52:33 +0000

llm.rb - the most capable AI runtime for Ruby - has added skills support. The same skills you might know and love from Claude, or Codex. They’re now available to the Ruby runtime through llm.rb and open up exciting possibilities.

Railsmaxxing, or hidden Rails gems

Sun, 19 Apr 2026 23:47:18 +0000

58 Rails built-ins worth knowing: Preloader, generates_token_for, resolve in routes, ActionController::Renderer, after_all_transactions_commit, and more. Plus 3 “anti-gems”: features with clean names that may bite when you adopt them.

How to Add a Visual Page Builder to Your Rails App in 10 Minutes

Sun, 19 Apr 2026 23:22:50 +0000

The Quickest Way to Build a Drag-and-Drop Landing Page Builder in Rails 8 Often when I am…

ruby-crewai: The missing Ruby SDK for CrewAI's multi-agent AI API

Sun, 19 Apr 2026 14:16:25 +0000

CrewAI is one of the fastest-growing multi-agent AI frameworks right now, but it’s Python-only. There’s no official Ruby SDK, which means Rails developers have been left out.

rspec-mockbidden: Forbid Unwanted RSpec Mocks

Sun, 19 Apr 2026 09:49:36 +0000

Utility gem for RSpec to forbid mocking methods on objects/classes/modules, evaluated at test runtime: https://lovro-bikic.github.io/rspec-mockbidden/

llm.rb is probably the most capable AI runtime in Ruby today

Sun, 19 Apr 2026 04:40:17 +0000

Did you know that llm.rb is the most capable AI runtime in Ruby right now? It can do things other libraries just can’t, and it can do those things today. Request canceltion? llm.rb has you covered. Turn any ActiveRecord model into an agent? llm.rb has you covered. MCP? llm.rb has you covered. Built-in tracer and observaility support? llm.rb has you covered. And much more.

How I Built a Native Android App with Zero Kotlin Experience

Sat, 18 Apr 2026 23:22:49 +0000

Turning a Rails App into an Android App: Testing Hotwire Native Recently I wanted to test…

llm_cost_tracker 0.1.2: self-hosted LLM API cost tracking for Ruby/Rails

Sat, 18 Apr 2026 12:22:11 +0000

I released my first Ruby gem: llm_cost_tracker.

Making Sense of JavaScript in Rails: Webpack, Rollup, esbuild, and Importmaps

Fri, 17 Apr 2026 23:21:48 +0000

Very often I find myself talking to developers who are incredibly confused by the JavaScript…

llm.rb v4.17.0 has been released

Fri, 17 Apr 2026 20:12:16 +0000

llm.rb has been released. Notable features in this release are Sequel and ActiveRecord support. Turn any ActiveRecord model into an LLM-capable model. It only requires one table. Same is true for Sequel. See CHANGELOG for details.

On Friday, I want to revisit this important milestone in my project.

Fri, 17 Apr 2026 14:02:42 +0000

https://rubystacknews.com/2026/01/09/ruby-can-draw-cities-now/

How to Build a Custom Affiliate System in Ruby on Rails

Thu, 16 Apr 2026 23:14:46 +0000

When you are launching a new SaaS, getting your first users is the hardest part. One of the best ways…

RubyKaigi 2026 launches next week.

Thu, 16 Apr 2026 02:30:02 +0000

https://rubystacknews.com/2026/04/15/rubykaigi-2026-a-reminder-of-what-innovation-actually-looks-like/

It Looks Like Ruby, But It’s Not: How to Understand Elixir

Wed, 15 Apr 2026 23:17:07 +0000

If you write Ruby, you will eventually get curious about Elixir. The creator of Elixir, José Valim,…

🚨 I stopped trusting online QR generators… so I built my own in Ruby.

Wed, 15 Apr 2026 12:52:47 +0000

https://rubystacknews.com/2026/04/15/create-qr-codes-from-scratch-with-ruby-ruby-libgd-and-rqrcode/

Pundit vs CanCanCan vs Action Policy: Which Rails Auth Gem Wins?

Tue, 14 Apr 2026 23:17:30 +0000

Sometimes I find myself starting a new Rails project, and almost immediately, I hit a wall: User…

Ruby Memes 2026-04-14

Tue, 14 Apr 2026 17:40:27 +0000

“Oh Ruby, you’re the most elegant and beautiful language ever! I just love you so much…” https://andymaleh.blogspot.com/2026/04/ruby-memes-2026-04-14-ruby-hypocrite.html

A different kind of tired

Tue, 14 Apr 2026 15:32:28 +0000

Earlier this year I was freaked out about AI. I’ve spent the months since using it constantly, on every project, at every stage. I expected to feel replaced, or at least unsettled. Instead, something underneath the work shifted.

Ruby Users Forum ❤️ Open Source

Tue, 14 Apr 2026 13:26:43 +0000

We’re collaborating with Open Source maintainers to bring their project discussions to the forum.