surveysays

answer.rb

class Answer < ActiveRecord::Base
	belongs_to :question
end

question.rb

class Question < ActiveRecord::Base
	belongs_to :survey
	has_many :answers, :dependent => :destroy
	accepts_nested_attributes_for :answers, :reject_if => lambda { |a| a[:content].blank? }, :allow_destroy => true
end

questionnaire.rb

class Questionnaire < ActiveRecord::Base
  has_many :questions, :dependent => :destroy
  accepts_nested_attributes_for :questions, :reject_if => lambda { |a| a[:content].blank? }, :allow_destroy => true
end

survey.rb

class Survey < ActiveRecord::Base
  has_many :questions, :dependent => :destroy
  accepts_nested_attributes_for :questions, :reject_if => lambda { |a| a[:content].blank? }, :allow_destroy => true
end