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

If you use Ruby Facets, you can lowercase the first letter:

https://github.com/rubyworks/facets/blob/master/lib/core/facets/string/uppercase.rb

Answer 2

There is also:

"coolat_cat".camelize(:lower) # => "coolCat"

Answer 3

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.

Answer 4

There is an inverse of capitalize called swapcase:

"Cool Cat".swapcase   #=> "cOOL cAT"