paperclip中文文件名

?paperclip插件下lib/paperclip/attachment.rb??

instance_write(:file_name,???????uploaded_file.original_filename.strip.gsub(/[^A-Za-z\d\.\-_]+/,?'_'))
默认只保存英文单词，中文删掉。把.gsub(/[^A-Za-z\d\.\-_]+/,?'_')去掉。成功上传中文附件，并且下载时名字没变。?