sql - 将SQL语句翻译成named_scope？

Question

如何将此 SQL 转换为named_scope？另外，我希望总评论参数通过 lambda 传递。

“选择用户。，计数()作为用户的总评论数，其中(users.id = comments.user_id)和(comments.public_comment = 1)和(comments.aasm_state = '发布') 和 (comments.forum_user_id 为空) 按总评论数 > 25 的 users.id 进行分组"

Answer 1

named_scope :comments_count_gt, lambda { |count|
  { :select => "users., count() as total_comments",
    :joins => :comments,
    :conditions => { :comments => { :public_comment => 1, :aasm_state => 'posted' } },
    :group => "users.id",
    :having => "total_comments > #{count.to_i}"
  }
}