gistfile1.txt

  def self.destroy_and_remove_events(params)
    question = Question.find params[:question_id]
    transaction do
      answers_to_del, comments_to_del = [], []
      answers = question.answers;
      comments = []; answers.each {|a| comments << a.comments; answers_to_del << a.id}; comments.flatten!
      comments.each{|c| comments_to_del = c.id}
      TimelineEvent.delete_all(["subject_type = 'Answer' AND ( subject_id IN (?) )", answers_to_del.to_a.join(',')]) if answers_to_del.present?
      TimelineEvent.delete_all(["subject_type = 'Comment' AND ( subject_id IN (?) )", comments_to_del.to_a.join(',')]) if comments_to_del.present?
      TimelineEvent.delete_all(["subject_type = 'Question' AND ( subject_id = ? )", question.id])
      question.destroy
      true
    end
  end