You’ve heard “keep controllers skinny, models thin” but how? The SOLID principles are a compact set of habits that keep Rails apps change-friendly as they grow. Here’s a practical, with bite-size Rails examples you can use today. What is SOLID? ...

When you’re building features in Ruby on Rails, few things feel as convenient as Active Record callbacks. They’re like silent assistants: “after you save, I’ll send the email,” or “before you destroy, I’ll clean up the data.” But those same helpers ...

Imagine that your Rails application is running smoothly. Users are satisfied, payments are processed, emails are sent out, and reports are produced. Sidekiq feels like magic. Then one Friday evening because production issues always happen on Fridays...

Ruby on Rails has your back when it comes to cross-site scripting XSS - by default, it escapes all strings in your views so malicious HTML and JavaScript can't execute in your users' browsers. But there's a sharp tool in Rails' toolbox called .html...