OpenBook: Ruby on Rails 2
In der openbook Serie von Galileo das Buch Ruby on Rails 2 im HTML Format.
Archived entries for ruby
Path Data on a Google Map
Interessant: Encoding polylines for Google Maps
If you want to display complicated path data on a Google Map, the most efficient way to do so is with an encoded polyline or polygon. The primary purpose of this page is to explain this encoding process.
Ok die mathematischen Grundlagen interessieren mich weniger, aber wird auch ein Point and Click Interface angeboten 
Rails E-Book
Für eine kurze Zeit gibt es das SitePoint Buch Build Your Own Ruby on Rails Web Applications -nach einer Registrierung - kostenlos als pdf.
This book will lead you through the components that make up the Rails frame work by building a clone of the popular story-sharing web site digg.com. This will give you a chance to get your feet wet building a simple, yet comprehensive web application using Ruby on Rails.
Es muss nicht immer Rails ein
Derek Sivers hat 7 reasons I switched back to PHP after 2 years on Rails.
#1 - “IS THERE ANYTHING RAILS/RUBY CAN DO THAT PHP CAN’T DO? … (thinking)… NO.”
For 2 years, I thought Rails is genius, PHP is shit. Rails is powerful, PHP is crap.
I was nearly killing my company in the name of blindly insisting Rails was the answer to all questions, timeframes be damned.
But when I took a real emotionless non-prejudiced look at it, I realized the language didn’t matter that much.
Ruby is prettier. Rails has nice shortcuts. But no big shortcuts I can’t code-up myself in a day if needed.
Looked at from a real practical point of view, I could do anything in PHP, and there were many business reasons to do so.
Ruby like ActiveSupport for PHP
Ben Vinegar hat Rubys ActiveSupport nach PHP portiert.
Beispiel:
require_once('ActiveSupport.php');
_(14)->ordinalize(); # Outputs "14th"
_(7.3)->megabytes(); # Returns number of bytes in 7.3 megabytes
_("an example sentence")->endsWith("sentence"); # Returns true