给每个项目添加一条初始创建信息，如果有menber，最早加进来的就算创始人,并给projects表的更新创建人

db/migrate/20150311013036_add_project_create_info_to_forge_activities.rb

@@ -0,0 +1,21 @@
+# Time 2015-03-11 14:25:45
+# Author lizanle
+# Description 给每个项目添加一条初始创建信息，如果有menber，最早加进来的就算创始人,并给projects表的更新创建人
+class AddProjectCreateInfoToForgeActivities < ActiveRecord::Migration
+  def change
+    Project.all.each do |e|
+      user = e.members.order("members.created_on asc").first
+      next if user.nil?
+      execute("insert into forge_activities(forge_act_id,
+                                                                  forge_act_type,
+                                                                  project_id,
+                                                                  user_id,
+                                                                  created_at,
+                                                                  updated_at)
+                                     values(#{e.id},'ProjectCreateInfo',#{e.id},#{user.user_id},
+                                            '#{user.created_on.to_s.gsub("+0800","").to_datetime.strftime("%Y-%m-%d %H:%M:%S")}',
+                                            '#{user.created_on.to_s.gsub("+0800","").to_datetime.strftime("%Y-%m-%d %H:%M:%S")}')")
+       execute("update projects set user_id=#{user.user_id} where id =#{e.id}")
+    end
+  end
+end