class ContestMessage < ActiveRecord::Base
  # Work：status：
  # nil：发布了作业； 1：截止时间到了提醒！；2:开启在线评审； 3：关闭在线评审； 4：匿评开始失败； 5：在线评审时间快到了

  attr_accessible :content, :contest_message_id, :contest_message_type, :status, :viewed, :user_id, :contest_id

  belongs_to :contest_message ,:polymorphic => true
  belongs_to :user
  belongs_to :contest
  has_many :message_alls, :class_name => 'MessageAll',:as =>:message,  :dependent => :destroy

  validates :user_id, presence: true
  validates :contest_id, presence: true
  validates :contest_message_id, presence: true
  validates :contest_message_type, presence: true
  after_create :add_user_message

  def add_user_message
    if MessageAll.where("message_type = '#{self.class.to_s}' and message_id = '#{self.id}'").first.nil? && self.status != 9
      self.message_alls << MessageAll.new(:user_id => self.user_id)
    end
  end
end