class GuestFormStep < ActiveRecord::Base

GuestFormStep.rb

class GuestFormStep < ActiveRecord::Base
  abstract_class = true
  
  translates :name, :description
  belongs_to :guest_form
  has_many :questions, :dependent => :destroy, :order => 'position'
  
  validates_presence_of :name
  validates_presence_of :type
  validates_presence_of :guest_form
  
  accepts_nested_attributes_for :questions, :allow_destroy => true

  named_scope :with_questions do
    def with_questions
      self.questions.visible_to_user.any?
    end
  end
  
  def after_initialize
    self.build_initial_questions unless self.questions.any?  
  end

  def step_type
    self.class.class_name.titleize  
  end

  protected

  def build_initial_questions
  end

  def build_default_options
  end

  def fields_visible_to_user
  end
  
  private

  def attributes_protected_by_default
    super - ['type']
  end
end