class Forum < ActiveRecord::Base
  acts_as_list

  validates_presence_of :name

  has_many :moderatorships, :dependent => :destroy
  has_many :moderators, :through => :moderatorships, :source => :user, :order => 'users.login'

  has_many :topics, :order => 'sticky desc, replied_at desc', :dependent => :destroy do
    def first
      @first_topic ||= find(:first)
    end
  end

  has_many :posts, :order => 'posts.created_at desc' do
    def last
      @last_post ||= find(:first)
    end
  end

  format_attribute :description
end