Ruby on Rails on Medium

An ActiveRecord Transaction Gotcha

I was doing some work with ActiveRecord transactions and I noticed a strange behavior where some of my after_commit callbacks (yes, unfortunately I had to use callbacks) were not being called.

Stop Crippling Your Database (1/6): Notes on Sqlphobia and Database Agnosticism

There is a tendency in the Rails community to avoid SQL like the plague. We don’t want to write SQL, we don’t want to read SQL and, above all, we don’t want to understand SQL. That’s what…

A Primer on ActiveModel Validations

Recently, I needed to validate some attributes in a model that were divisible by 0.5. My initial approach was to write a method that would perform the validations and run it with validate:

Easy Caching with Rails 4 + Heroku + Redis

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interactive TDD tour