class AboutMemoMessage < ActiveRecord::Migration
  def up
    Memo.all.each do |memo|
      transaction do
        # 贴吧帖子
        receivers = []
        u = User.find(6)
        receivers << u
        # 主贴
        if memo.parent_id.nil?
          if memo.author_id != memo.forum.creator_id # 发帖人不是吧主
            receivers << memo.forum.creator
          end
        else # 回帖
          # 添加吧主
          if memo.author_id != memo.forum.creator_id
            receivers << memo.forum.creator
          end
          # 添加发帖人
          unless memo.parent.nil?
            if  memo.author_id != memo.parent.author_id
              receivers << memo.parent.author
              puts memo.id
            end
          end
        end
        receivers.each do |r|
          memo.memo_messages << MemoMessage.new(:user_id => r.id, :forum_id => memo.forum_id, :memo_id => memo.id, :memo_type => "Memo", :viewed => true)
        end
      end
    end
  end

  def down
  end
end