class Survey < ActiveRecord::Base
  has_many :questions, :dependent => :destroy
  has_many :answers, through: :questions
  accepts_nested_attributes_for :questions,
                                allow_destroy: true

  validates :title, presence: true
  validates :description, presence: true
  validates :creator_uid, presence: true

  def has_answers
    if answers.count > 0
      return true
    end
    return false
  end

  enum visibility: { Public: 0, Protected: 1, Private: 2 }

end