socialforge/app/models/applied_contest.rb

class AppliedContest < ActiveRecord::Base
  include ContestsHelper
  belongs_to :contest
  belongs_to :user
  #status :0 新建  1 已批准  2 拒绝
  attr_accessible :role, :status, :contest_id, :user_id

  has_many :applied_messages, :class_name => 'AppliedMessage', :as => :applied, :dependent => :destroy
  after_create :send_appliled_message

  # 仅仅给竞赛管理人员发送消息
  def send_appliled_message
    case self.role
      when '13'
        role = 1
      when '14'
        role = 2
      when '15'
        role = 3
    end
    contest_managers(self.contest).each do |member|
      self.applied_messages << AppliedMessage.new(:user_id => member.user_id, :status => 0, :viewed => false, :role => role)
    end
    # end
  end
end