diff --git a/app/helpers/export_helper.rb b/app/helpers/export_helper.rb
index ca76ee953..22adf3005 100644
--- a/app/helpers/export_helper.rb
+++ b/app/helpers/export_helper.rb
@@ -850,7 +850,7 @@ module ExportHelper
   def make_zip_name(work, file_name="")
     Rails.logger.info("######################file_name: #{file_name}")
     # name = file_name === "" ? "" : (file_name[0, file_name.rindex('.')]+"_")
-    "#{work&.user&.student_id}_#{work&.user&.real_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
+    "#{work&.homework_common.course&.user_group_name(work.user_id)}_#{work&.user&.student_id}_#{work&.user&.real_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
   end
 
   def zipping(zip_name_refer, files_paths, output_path, is_attachment=false, not_exist_file=[])
diff --git a/lib/tasks/zip_pack.rake b/lib/tasks/zip_pack.rake
index c1a080e36..393f7ab3c 100644
--- a/lib/tasks/zip_pack.rake
+++ b/lib/tasks/zip_pack.rake
@@ -46,6 +46,21 @@ namespace :zip_pack do
     end
   end
 
+  task :homework_attach_pack => :environment do
+    include ExportHelper
+    if ENV['args']
+      homework_id = ENV['args']
+      homework = HomeworkCommon.find homework_id
+      zip_works = homework.student_works.where("work_status > 0")
+      if zip_works.size > 0
+        zipfile = zip_homework_common homework, zip_works
+      else
+        zipfile = {:message => "no file"}
+      end
+      puts "out: #{zipfile}"
+    end
+  end
+
   def filename_for_content_disposition(name)
     request.env['HTTP_USER_AGENT'] =~ %r{MSIE|Trident|Edge} ? ERB::Util.url_encode(name) : name
   end