调整

app/helpers/export_helper.rb

@@ -454,7 +454,7 @@ module ExportHelper
     #单个文件的话,不需要压缩,只改名
     if homeworks_attach_path.size == 1
       out_file = find_or_pack(object, work.user_id, digests.sort){
-        des_path = "#{OUTPUT_FOLDER}/#{make_zip_name(work, filename.first)}_#{File.basename(homeworks_attach_path.first)}"
+        des_path = "#{OUTPUT_FOLDER}/#{make_zip_name(work, filename.first)}_#{work.id}}"
         FileUtils.cp homeworks_attach_path.first, des_path
         des_path
       }

app/models/attachment.rb

@@ -25,7 +25,7 @@ class Attachment < ApplicationRecord
   validates_length_of :description, maximum: 100
 
   def diskfile
-    File.join(File.join(Rails.root, "files"), disk_directory.to_s, disk_filename.to_s)
+    File.join(File.join(Rails.root, "files"), disk_directory.to_s, filename.to_s)
   end
 
   def title