fix error for first open site

lib/archive/engine.rb

@@ -6,20 +6,7 @@ module Archive
       require "#{ENV['PWD']}/app/models/category"
       require "#{ENV['PWD']}/app/models/module_app"
       
-      OrbitApp.registration "Archive", :type => "ModuleApp" do
+      tmp = OrbitApp.registration "Archive", :type => "ModuleApp" do
-        categories_temp = ModuleApp.where(:key => "archive").first.categories
-      
-        categories_temp.each do |category|
-            archive_cat = ArchiveCategory.where(:category_id => category.id)
-            if archive_cat.count == 0
-                ArchiveCategory.create(category_id: category.id.to_s)
-            else
-                archive_cat[1..-1].each do |cat|
-                    cat.delete
-                end
-            end
-        end
-          
         module_label "archive.archive"
         base_url File.expand_path File.dirname(__FILE__)
         widget_methods ["widget","group_by_category"]
@@ -68,6 +55,19 @@ module Archive
                 :available_for => 'managers'
         end
       end
+      categories_temp = ModuleApp.where(:key => "archive").first.categories
+      
+      categories_temp.each do |category|
+        archive_cat = ArchiveCategory.where(:category_id => category.id)
+        if archive_cat.count == 0
+          ArchiveCategory.create(category_id: category.id.to_s)
+        else
+          archive_cat[1..-1].each do |cat|
+            cat.delete
+          end
+        end
+      end
+      tmp
     end
   end
 end