Ruby on Rails uncapitalize first letter

Question

I\'m running Rails 2.3.2.

How do I convert \"Cool\" to \"cool\"? I know \"Cool\".downcase works, but is there a Ruby/Rails method

Answer 1

There is no real inverse of capitalize, but I think underscore comes close.

"CoolCat".underscore  #=> "cool_cat"
"cool_cat".capitalize #=> "Cool_cat"
"cool_cat".camelize   #=> "CoolCat"

Edit: underscore is of course the inverse of camelize, not capitalize.