Move method 'recover_documents_from_cache' from documentable controllers to document.

app/controllers/documents_controller.rb

@@ -10,8 +10,6 @@ class DocumentsController < ApplicationController
   end
 
   def create
-    recover_attachments_from_cache
-
     if @document.save
       flash[:notice] = t "documents.actions.create.notice"
       redirect_to params[:from]
@@ -62,10 +60,4 @@ class DocumentsController < ApplicationController
     @document.user = current_user
   end
 
-  def recover_attachments_from_cache
-    if @document.attachment.blank? && @document.cached_attachment.present?
-      @document.set_attachment_from_cached_attachment
-    end
-  end
-
 end