修改迁移文件的bug

db/migrate/20151116020842_copy_forge_activities_to_org_activities.rb

@@ -3,7 +3,7 @@ class CopyForgeActivitiesToOrgActivities < ActiveRecord::Migration
     count = ForgeActivity.all.count/30 + 1
     for i in 1 ... count do
       transaction do
-        ForgeActivity.page(i).per(30).each do
+        ForgeActivity.page(i).per(30).each do |forge_act|
           OrgActivity.create(:user_id => forge_act.user_id,
                              :org_act_id => forge_act.forge_act_id,
                              :org_act_type => forge_act.forge_act_type,

db/migrate/20151118031602_copy_course_activities_to_org_activities.rb

@@ -4,13 +4,19 @@ class CopyCourseActivitiesToOrgActivities < ActiveRecord::Migration
     for i in 1 ... count do
       transaction do
         CourseActivity.page(i).per(30).each do |course_act|
-          OrgActivity.create(:user_id => course_act.user_id,
-                             :org_act_type => course_act.course_act_type,
-                             :org_act_id => course_act.course_act_id,
-                             :container_id => course_act.course_id,
-                             :container_type => "Course",
-                             :created_at => course_act.created_at,
-                             :updated_at => course_act.updated_at)
+          if course_act.course_act_type == 'Message' && !course_act.course_act.parent_id.nil?
+            org_activity = OrgActivity.where("org_act_type = 'Message' and org_act_id = #{course_act.course_act.parent.id}").first
+            org_activity.created_at = course_act.created_at
+            org_activity.save
+          else
+            OrgActivity.create(:user_id => course_act.user_id,
+                               :org_act_id => course_act.course_act_id,
+                               :org_act_type => course_act.course_act_type,
+                               :container_id => course_act.course_id,
+                               :container_type => 'Course',
+                               :created_at => course_act.created_at,
+                               :updated_at => course_act.updated_at)
+          end
         end
       end
     end