From: Jamis Buck <jamis@37signals.com>
Date: 2007-01-15T00:26:43+09:00
Subject: Re: "soemthing".pluralize/at/from/... -> NoMethodError

David,

Those are not standard Ruby methods. They are defined in the Rails 
ActiveSupport library, and thus can only be accessed from within Rails 
applications (or other applications that explicitly require 
ActiveSupport).

- Jamis

David Krmpotic wrote:
> Hello,
> 
> 
> I've been wondering about this for some time now.. Why don't any of the
> following methods work: string.at/from/first/last/humanize/pluralize ?
> IRB returns:
> 
> NoMethodError: undefined method `pluralize' for "something":String
> 
> You can try it yourself (also by using web IRB from here:
> http://tryruby.hobix.com/)
> 
> Those methods are mentioned in "Agile Development with Rails" for
> example.. you can also see people using them on Google code search.
> 
> However, they are not mentioned in documentation:
> http://ruby-doc.org/core/classes/String.html
> 
> This is funny. Also.. string.to_json and string.to_yaml are mentioned in
> the agile book, but don't work either.
> 
> This example doesn't go through in IRB:
> 
> # For demo purposes, create a Ruby structure with two attributes
> Rating = Struct.new(:name, :ratings)
> rating = Rating.new("Rails" , [ 10, 10, 9.5, 10 ])
> # and serialize an object of that structure two ways...
> puts rating.to_json #=> ["Rails", [10, 10, 9.5, 10]]
> puts rating.to_yaml #=> --- !ruby/struct:Rating
> name: Rails
> ratings:
> - 10
> - 10
> - 9.5
> - 10
> 
> Can you help me understand all this? Thank you!
> 
> David


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