数据迁移文件增加个人动态中的迁移

db/migrate/20150601032112_about_homework.rb

@@ -18,6 +18,13 @@ class AboutHomework < ActiveRecord::Migration
           homework.updated_at = bid.updated_on
           homework.save
 
+          #个人动态
+          bid.acts.each do |act|
+            act.act_type = homework.class.to_s
+            act.act_id = homework.id
+            act.save
+          end
+
           #作业附件
           bid.attachments.each do |attach|
             attach.container = homework