When mime types are registered they are placed in a hash constant EXTENSION_LOOKUP in the module Mime. For reference, the file with the relevant code is in rails/action_pack/lib/action_dispatch/http/mime_type.rb available on Github at https://github.com/r...

There are a few ways to solve this problem. However, I think the easiest is to cache the day of the year that the user is born on as an integer. If stored alongside the timestamp we can quickly get a list but properly handle the full birthday elsewhere, s...

I just wrote and released my first Ruby Gem, Hashed Attributes https://rubygems.org/gems/hashed_attributes. It is a very simple ActiveRecord extension for saving variables through a serialized hash. The Gem will let you declare getter and setter methods t...

If you run into problems using ActionMailer > 2.2, Postfix and OpenSSL while sending mail from your application, try changing the following: vim /etc/postfix/main.cf Change smtpd_use_tls=yes to smtpd_use_tls=no OpenSSL support with Postfix does ...

If you want to take a look at the SQL being generated by active record while your using the console, you can either type this into the console when it loads ActiveRecord::Base.logger = Logger.new(STDOUT) Or you can add it to your environment so that it'...