文件上传修改

app/controllers/files_controller.rb

@@ -163,7 +163,7 @@ class FilesController < ApplicationController
     end
    end
 
-  # 返回制定资源类型的资源列表
+  # 返回指定资源类型的资源列表
   # added by nwb
   def getattachtype
     sort_init 'created_on', 'desc' 

lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb

@@ -84,10 +84,12 @@ module Redmine
 
         def save_attachments(attachments, author=User.current)
           # 清除临时文件
+          if attachments
             tempAttach = attachments[:dummy]
             if  tempAttach && tempAttach[:file]
               attachments.delete(:dummy)
             end
+          end
 
           if attachments.is_a?(Hash)
             attachments = attachments.stringify_keys