fix i18n,reload problems

lib/tasks/migrate.rake

@@ -439,5 +439,56 @@ namespace :migrate do
       ma.save
     end
   end
+  task :cleanup_page_part_without_page => :environment do
+    pps = PagePart.all.select{|t| t.page.nil? }
+    pps.each{|t| t.destroy}
+  end
 
+  task :backup_module_app_info => :environment do
+
+    PagePart.all.each do |pp|
+      pp[:backup_module_app_key] = (pp.module_app ? pp.module_app.key : nil)
+      pp.save
+      puts pp.inspect
+    end
+
+    Page.all.each do |page|
+      page[:backup_module_app_key] = (page.module_app ?  page.module_app.key : nil)
+      page.save
+      puts  page.inspect
+    end
+
+  end
+
+  task :rebind_module_app => :environment do
+    Page.all.each do |page|
+      if page[:backup_module_app_key].nil?
+        page.module_app = nil
+      else
+        page.module_app = ModuleApp.where(:key=> page[:backup_module_app_key]).first
+      end
+      page.save      
+    end
+
+    PagePart.all.each do |pp|
+      if pp[:backup_module_app_key].nil?
+        pp.module_app = nil
+      else
+        pp.module_app = ModuleApp.where(:key=> pp[:backup_module_app_key]).first
+      end
+      pp.save
+    end
+  end
+
+  task :clean_up_module_app_info => :environment do
+    Page.all.each do |page|
+      page.unset(:backup_module_app_key)
+      page.save
+    end
+
+    PagePart.all.each do |pp|
+      pp.unset(:backup_module_app_key)
+      pp.save
+    end
+  end
 end