Diego Selzlein
Stories, tutorials, codes, projects, thoughts and other things by Diego Selzlein.

If you have worked with Heroku, you probably have heard of 12-factor. You probably have added the rails_12factor gem to your projects. But are you aware of what the heck is that? I heard about 12-...

A few weeks ago I came across an issue while dealing with associations I had to eager load. The product I’m working on supports custom templates using liquid. That means our customers can customi...

Every once in a while when I’m working with Rails, I face a little problem like this: given two models, Book and Category, book belonging to a category, list all books ordered by its category’s nam...

Hi, I had to make a little presentation about the Git version control manager system to my coworkers. Using that, I decided to create a simple post to give readers a general idea of how this amazi...

I have a PS3 and I bought a new game. However, before I can play my new game, I need to download and update the patches it requires (some updates and stuff). Everything ok so far. The problem start...