ruby 上传文件

def upload_file

if !params['upload_file'].nil?
file = params['upload_file']

file_upload(file)

end
end

def file_upload(upload)

begin
FileUtils.mkpath(upload_path) unless File.directory?(upload_path)
if upload.kind_of?(StringIO)
upload.rewind
end

orig_name = upload.original_filename
base_name = File.basename(orig_name, ".*") # 取得文件名字
ext_name = File.extname(orig_name) # 取得文件扩展名
# 重命名
file_name = base_name + '_' + Time.now.strftime("%y%m%d") + ext_name
# 将文件写入磁盘
File.open(upload_path(file_name), "wb") { |f| f.write(upload.read) }

rescue
raise
end

redirect_to '/service/upload_file'

end

# 生成绝对路径
def upload_path(file_name = nil)
"#{RAILS_ROOT}/public/tagfiles/#{file_name.nil? ? '' : file_name}"
end