socialforge/app/models/apply_add_schools.rb

class ApplyAddSchools < ActiveRecord::Base
  # status：0 未审批 ； 1 已批阅
  attr_accessible :address, :city, :name, :province, :remarks, :school_id, :status
  has_many :applied_messages, :class_name =>'AppliedMessage', :as => :applied_message, :dependent => :destroy
  belongs_to :school

  after_create :send_massage

  #给系统所有管理发送消息
  def send_massage
    users = User.where(:admin => 1)
    users.each do |user|
      self.applied_messages << AppliedMessage.new(:user_id => user.id, :viewed => false, :status => false)
    end
  end
end