回形针在validates_presence_of失败

行，所以我有一个模型，在该模型中，我有回形针在validates_presence_of失败

class User < ActiveRecord::Base 
    validates_presence_of :name 
    has_attached_file :picture, :styles => { :medium => "300x300>", :thumb => "100x100>",:tiny => "25x25>" } 
end

当我创建一个用户，并上传一张照片，不输入名称我得到预期的消息

1 error prohibited this user from being saved. 
There were problems with the following fields: 
    * Name can't be blank

但图像消失......当我看到我的控制台我看

 [paperclip] identify -format %wx%h '/var/folders/QK/QK+tCPT-Gx8yGDxVQbDuF++++TI/-Tmp-/stream20110113-19714-1ucz75p-0.jpg[0]' 2>/dev/null 
     [paperclip] convert '/var/folders/QK/QK+tCPT-Gx8yGDxVQbDuF++++TI/-Tmp-/stream20110113-19714-1ucz75p-0.jpg[0]' -resize "25x25>" '/var/folders/QK/QK+tCPT-Gx8yGDxVQbDuF++++TI/-Tmp-/stream20110113-19714-1ucz75p-020110113-19714-r839l2-0' 2>/dev/null

但图像消失在新的p年龄....有没有一种方法来保存此图像，以便任何人使用该页面不必再次浏览图像

来源

2011-01-13 Trace