I love cheat sheets. I print them out and stick them on the wall in my workspace. They help me to memorize and discover methods and commands and they reduce the amount of time I spend looking stuff up. Here is a list of the ruby and rails related cheat sheets that I’ve found useful. Links are to PDFs where available.

General ruby and rails

• Ruby on Rails cheatsheet, Blaine Kendall [1]
• Ruby on Rails, ILoveJackDaniels.com [2]
• Ruby Cheatsheet v.1, cenophobie.com [3]

More specific rails topics

• Ruby and rails test assertions, Topfunky Corporation [4]
• rSpec quick reference, Dave Astels [5]
• Rails Migrations, Garrett Snider [6]
• Capistrano, David Pettifer [7]
• REST Basics, Peepcode [8]
• Active Resource, Vincent Woo [9]

Textmate

• Textmate, David Powers [10]
• Textmate for ruby and rails, Mike Clark [11]
• Textmate rails bundle, Sebastian Friedrich [12]

Other related topics

• Prototype, Jonathan Snook [13]
• scriptaculous Combination Effects, Amy Hoy [14]
• CSS, ILoveJackDaniels.com [15]
• MySql, ILoveJackDaniels.com [16]
• Subversion Quick Reference Card [17]
• Regular Expressions, ILoveJackDaniels.com [18]

The cheat gem

• The cheat gem [19] gives you access to a whole bunch of cheats sheets from your command line

A couple of longer references

• Ruby QuickRef [20]
• InVisible Ruby On Rails Reference 1.1.2 [21]