Rails - Jul 2006 - Incorrect composed_of I think

I am trying to use composed_of in my model, but I not succeeding.

With the code I pasted below, I cannot perform this action in the console:

property = Property.new(1, "px")

I get NameError: uninitialized constant Property when I try to perform 
that action. It''s not finding my class I made I suppose. The Property 
class is in the same file as the Element class, element.rb.

Does anyone know how to do this?

Thanx for any and all info.


Code...

# My model is simple:

class Element < ActiveRecord::Base
  composed_of :fontsize,
              :class_name => "Property",
              :mapping =>
                [
                  %w(font_size amount),
                  %w(font_size_unit unit)
                ]
end

# My class for this is simple:

class Property
  attr_reader :amount, :unit

  def intialize(amount, unit)
    @amount = amount
    @unit = unit
  end

  def to_s
    @amount.to_s + @unit
  end
end
-- 

://
Nathan Herald

On 2006-07-13 14:23:52 -0400, Nathan Herald 
<myobie@gmail.com> said:
> I am trying to use composed_of in my model, but I [am] not succeeding.
I have learned, through trial and error, that when using composed_of, 
the class belongs in it''s own file.

Example:

element.rb

class Element < ActiveRecord::Base
  composed_of :fontsize,
              :class_name => "Property"
end

so you would create property.rb and have something like this inside

class Property
  attr_reader :amount, :unit

  def initialize(amount, unit)
    @amount = amount
    @unit = unit
  end

  def to_s
    @amount.to_s + @unit
  end
end

Just in case anyone needs this info.

-- 

://
Nathan Herald