Paperclip preserve files?

Rails
1

Hi,

 I am using paperclip to upload files. The problem I am facing is,

based on my object property I need to preserve my file. Means my object
should be deleted from db but the file need to be restored.

 I am using the option :preserve_files => true.
 If I keep the above option in model it will be access to all the

objects of the model. I need to restore only for limited objects.

 for example

 def destroy
   if obj.restore_attachment
     Paperclip::Attachment.default_options.merge!(:preserve_files

=>true)
end
Paperclip::Attachment.default_options.merge!(:preserve_files
=>false)
obj.destroy
end

 If you observe depending on the attachment property I am setting

the option.

     obj.restore_attachment = true
     obj.save
 For obj.destroy
     obj is getting deleted and file is getting restored.


     obj1.restore_attachment = false
     obj1.save
 For obj1.destroy
     obj1 is getting deleted and file is also getting restored.
     For obj1 this should not be happened. The file should also get

deleted.

     Even I tried passing lambda in the model
  has_attached_file :attachment ,:preserve_files => lambda{|obj|

obj.restore_attachment ? true : false }

 This also behaves as like first approach.

 What I observe is when we set preserve_files => true the paperclip

is taking this option only through out the other requests.

 How to reload paperclip in the code with new options

 Can you please suggest any alternate solution.

Cheers,
Venkat.