IT討論區(117) 不開post的人

old_post = Post.where('name LIKE ?', 'IT討論區%').last

post_num = old_post.name[/IT討論區\((\d+)\)/, 1]

new_post = Post.create!(name: "IT討論區(#{post_num}): IT狗，做到嘔！")

old_post.replies.last(3).each do |reply|
  new_post.replies.create!(content: "[quote]#{reply.content}[/quote]")
end