Use different path to store ajax uploaded cached attachments

app/controllers/concerns/commentable_actions.rb

@@ -115,7 +115,7 @@ module CommentableActions
     def recover_documents_from_cache(resource)
       return false unless resource.try(:documents)
       resource.documents = resource.documents.each do |document|
-        document.set_attachment_from_cache if document.cached_attachment.present?
+        document.set_attachment_from_cached_attachment if document.cached_attachment.present?
       end
     end
 

app/controllers/documents_controller.rb

@@ -15,6 +15,7 @@ class DocumentsController < ApplicationController
 
   def create
     recover_attachments_from_cache
+
     if @document.save
       flash[:notice] = t "documents.actions.create.notice"
       redirect_to params[:from]
@@ -26,6 +27,7 @@ class DocumentsController < ApplicationController
 
   def destroy
     respond_to do |format|
+
       format.html do
         if @document.destroy
           flash[:notice] = t "documents.actions.destroy.notice"
@@ -34,6 +36,7 @@ class DocumentsController < ApplicationController
         end
         redirect_to params[:from]
       end
+
       format.js do
         if @document.destroy
           flash.now[:notice] = t "documents.actions.destroy.notice"
@@ -41,12 +44,13 @@ class DocumentsController < ApplicationController
           flash.now[:alert] = t "documents.actions.destroy.alert"
         end
       end
+
     end
   end
 
   def destroy_upload
     @document = Document.new(cached_attachment: params[:path])
-    @document.set_attachment_from_cache
+    @document.set_attachment_from_cached_attachment
     @document.documentable = @documentable
 
     if @document.attachment.destroy
@@ -60,6 +64,7 @@ class DocumentsController < ApplicationController
   def upload
     @document = Document.new(document_params.merge(user: current_user))
     @document.documentable = @documentable
+
     if @document.valid?
       @document.attachment_file_name = "#{Time.now.to_i} - #{@document.attachment_file_name}"
       @document.attachment.save
@@ -92,7 +97,7 @@ class DocumentsController < ApplicationController
 
   def recover_attachments_from_cache
     if @document.attachment.blank? && @document.cached_attachment.present?
-      @document.set_attachment_from_cache
+      @document.set_attachment_from_cached_attachment
     end
   end
 

app/models/document.rb

@@ -1,7 +1,7 @@
 class Document < ActiveRecord::Base
   include DocumentsHelper
   include DocumentablesHelper
-  has_attached_file :attachment
+  has_attached_file :attachment, path: ":rails_root/public/system/:class/:attachment/:prefix/:style/:filename"
   attr_accessor :cached_attachment
 
   belongs_to :user
@@ -28,7 +28,7 @@ class Document < ActiveRecord::Base
                              end
   end
 
-  def set_attachment_from_cache
+  def set_attachment_from_cached_attachment
     self.attachment = if Paperclip::Attachment.default_options[:storage] == :filesystem
                         File.open(cached_attachment)
                       else
@@ -36,6 +36,18 @@ class Document < ActiveRecord::Base
                       end
   end
 
+  Paperclip.interpolates :prefix do |attachment, style|
+    attachment.instance.prefix(attachment, style)
+  end
+
+  def prefix(attachment, style)
+    if !attachment.instance.persisted?
+      "cached_attachments/user/#{attachment.instance.user_id}"
+    else
+      Paperclip::Interpolations.id_partition(attachment, style)
+    end
+  end
+
   private
 
     def validate_attachment_size