gistfile1.rb

  def has_answered_questionnaire? questionnaire, options = {}
    #conditions = conditions_with_context(options)
    #questions = questionnaire.questions
    #!!Answer.find(:first, :conditions => {:question_id => questions.map(&:id), :user_id => id}.merge(conditions))

    all_blank =
      questions_and_answers_for(questionnaire, options).answers.all? do |answer|
        answer.blank? or answer.answer.blank?
      end

    not all_blank
  end