interblah.net

# If we build our ActiveRecord objects from attributes that had *real* classes, we could
# define the validation, and any other behaviour, in that attribute class. Would this
# make things like "blog url", "name", and "address" reusable?

  composed_of EditorialSummary, :called => :editorial_summary
  composed_of Url, :called => :image_url
  composed_of Address, :something => [:address_line_1, :address_line_2, :postcode, :country]

  class EditorialSummary < Attribute
    def initialize(string)
      @string = string
    end
    def paragraphs
      @string.split(/\n\s*\n/m)
    end
    def valid?
      # whatever
    end
  end

  def editorial_summary
    EditorialSummary.new(super)
  end