diff --git a/app/controllers/initialization_data_controller.rb b/app/controllers/initialization_data_controller.rb
index e94d8c6f4..f8bef787a 100644
--- a/app/controllers/initialization_data_controller.rb
+++ b/app/controllers/initialization_data_controller.rb
@@ -366,5 +366,30 @@ class InitializationDataController < ApplicationController
     end
   end
 
+  # 获取关卡附件
+  def get_attachment_data
+    task_pass = Challenge.where(id: @challenges).where("task_pass like '%/api/attachments/%'").pluck(:task_pass)
+    @att_ids = []
+    # 附件的格式为（/api/attachments/ + 附件id）的形式，因此下面的正文匹配是为了取出附件的id，方便迁移attachments
+    task_pass.each do |tp|
+      @att_ids += tp.scan(/\(\/api\/attachments\/.+\)/).map{|s|s.match(/\d+/)[0]}
+    end
+  end
+
+  # 创建附件数据
+  def copy_attachment_data
+    return if @att_ids.blank?
+    attachment_attrs = %i[id container_id container_type filename disk_filename filesize content_type digest author_id created_on
+    downloads description disk_directory attachtype is_public copy_from quotes is_publish publish_time resource_bank_id unified_setting
+    cloud_url course_second_category_id]
+    Attachment.bulk_insert(*attachment_attrs) do |worker|
+      Attachment.where(id: @att_ids).find_each do |att|
+        base_attr = att.attributes.except("author_id", "disk_directory", "copy_from")
+        # 本地版将过关任务的图片迁移到files/localshixuns 目录下， copy_from记录的是他原来的目录结构
+        worker.add(base_attr.merge({author_id: 1, disk_directory: "localshixuns", copy_from: att.disk_directory}))
+      end
+    end
+  end
+
 
 end