如果缺少某一附件。在下载后的文件增加相关说明文档

app/controllers/zipdown_controller.rb

@@ -75,16 +75,21 @@ class ZipdownController < ApplicationController
 
   def zip_homework_by_user(homeattach)
     homeworks_attach_path = []
+    not_exist_file = []
     # 需要将所有homework.attachments遍历加入zip
     # 并且返回zip路径
     homeattach.attachments.each do |attach|
-      homeworks_attach_path << attach.diskfile if File.exist?(attach.diskfile)
+      if File.exist?(attach.diskfile)
+        homeworks_attach_path << attach.diskfile
+      else
+        not_exist_file << attach.filename
       end
-    zipping("#{homeattach.user.lastname}#{homeattach.user.firstname}_#{((homeattach.user.user_extensions.nil? || homeattach.user.user_extensions.student_id.nil?) ? "" : homeattach.user.user_extensions.student_id)}_#{Time.now.to_i.to_s}.zip", homeworks_attach_path, OUTPUT_FOLDER, true)
+    end
+    zipping("#{homeattach.user.lastname}#{homeattach.user.firstname}_#{((homeattach.user.user_extensions.nil? || homeattach.user.user_extensions.student_id.nil?) ? "" : homeattach.user.user_extensions.student_id)}_#{Time.now.to_i.to_s}.zip", homeworks_attach_path, OUTPUT_FOLDER, true, not_exist_file)
   end
 
 
-  def zipping(zip_name_refer, files_paths, output_path, is_attachment=false)
+  def zipping(zip_name_refer, files_paths, output_path, is_attachment=false, not_exist_file=[])
     # 输入待打包的文件列表，已经打包文件定位到ouput_path
     ic = Iconv.new('GBK//IGNORE', 'UTF-8//IGNORE')
     input_filename = files_paths
@@ -101,9 +106,11 @@ class ZipdownController < ApplicationController
 
         zipfile.add(rename_file, filename)
       end
-      #zipfile.get_output_stream('ReadMe') do |os|
-      #  os.write 'Homeworks'
-      #end
+      unless not_exist_file.empty?
+        zipfile.get_output_stream('FILE_LOST.txt') do |os|
+          os.write l(:label_file_lost) + not_exist_file.join(',').to_s
+        end
+      end
     end
     zipfile_name
   rescue Errno => e

config/locales/zh.yml

@@ -2239,4 +2239,5 @@ zh:
   label_course_prompt: 课程：
   label_contain_resource: 已包含资源：
   label_quote_resource_failed: ",此资源引用失败! "
+  label_file_lost: 以下文件在服务器丢失：