question_results.rb

def results
    responses = Question.joins(<<-SQL)
      LEFT OUTER JOIN answer_choices
      ON answer_choices.question_id = questions.id
      LEFT OUTER JOIN responses
      ON answer_choices.id = responses.answer_choice_id
    SQL
    responses = responses.where("questions.id = ?", self.id)
    p responses
    responses.group('answer_choices.answer_body').count('responses.id') 
end