Tbh I had no idea this was even a thing until recently. I've been working with Rails for a while now and somehow never came across it. So let me explain it the way I understood it. You know how we normally do associations in Rails, User has many Posts, Post belongs to User. Two different models, two different tables. Simple. But what if a model needs to reference itself? Like same table, same mode
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Why I built another Ruby test runner inspired by Playwright Test Ruby already has great testing tools. If you are building Rails applications today, you probably use one of these combinations: RSpec + Capybara Minitest + Capybara Rails system tests Maybe Selenium, Cuprite, Ferrum, or Playwright through Ruby bindings These tools are mature, battle-tested, and widely used. So the natural question
AI coding tools are starting to look similar on the surface: they all offer chat, agents, code edits, terminal awareness, and some form of autocomplete. But the real differences are in the workflow. The question is less “which one has AI?” and more “where does the AI live in your development process?” For me, VS Code is still the baseline. It is flexible, extensible, familiar, and easy to compose