About Subscribe

Hi. I'm John - A Software Engineer based in Los Angeles, CA. I'm currently building at Evolution, a travel service company focusing on Ruby on Rails and AWS.

evo cafe Avita specials
Evolution Travel US & AU - Ruby on Rails Software
Evo Admin - Ruby on Rails Software
Avita Medical - PHP Website
Evo Specials - React JS Chrome Extension


  • Aug 07
     Metaprogramming - define_method

    Make methods on the fly!
  • Jul 11
     What does map(&:name) mean in Ruby?

    Mapping 101 and useful methods
  • Jul 03
     How to Eliminate N+1 Queries

    Learn how about includes and eager loading
  • Jun 03
     Zsh configs for your terminal

    zsh + powerlevel9k > bash
  • May 20
     Draper Gem 101

    OOP presentation logic
  • May 11
     Add a Rails Env to your Vagrant Server

    Create configurable development environments
  • May 08
     Named Scopes

    Optimize your search results
  • May 07
     Scaffold a New Rails 5 API.

    Make a Rails/React API from start to finish
Older Posts →

© John Cordero 2019