gistfile1.txt

class Question < ActiveRecord::Base

  belongs_to :survey

  def samples
    populate_samples
  end

  private
  def populate_samples
    @samples ||= [].tap do |samples|
      sample_count = samples.size
      if sample_count < (self.survey.type == 'ABSurvey' ? 2 : 1)
        if self.survey.type == 'ABSurvey'
          if sample_count == 0
            samples << Sample.new(:name => 'A')
          end
          samples << Sample.new(:name => 'B')
        else
          samples << Sample.new
        end
      end
    end
  end
end