class AnnouncementTag < Tag
  
  has_and_belongs_to_many :bulletins
  
  
  def get_visible_bulletins(sort = :name)
    date_now = Time.now
	  self.bulletins.where(:is_hidden => false).any_of( {deadline: nil,:postdate.lte => date_now} , {:deadline.gte => date_now,:postdate.lte => date_now} ).desc(:is_top, sort)
  end
  
end