Fixing upload bug

app/models/design.rb

@@ -18,6 +18,7 @@ class Design
   embeds_many :images
 
   after_save :procs_embedded_objects
+  after_destroy :del_embedded_objects
   
   def javascripts=(*attrs)
     self.files = (attrs << 'javascripts')
@@ -35,12 +36,12 @@ class Design
   def files=(attrs)
     files = eval(attrs.last)
     attrs[0].each do |a|
-      if(a[:id].nil?)
+      if(a[:id]=='' && !a[:file].nil?)
         files.build(:file => a[:file], :to_save => true)
       else
         files.each do |file|
           if file.id.to_s == a[:id]
-            file.to_destroy = a[:to_destroy]
+             file.to_destroy = a[:to_destroy]
           end
         end
       end
@@ -48,6 +49,13 @@ class Design
   end
   
   protected
+  def del_embedded_objects
+    [self.stylesheets, self.javascripts, self.images].each do |objects|
+      objects.each do |object|
+        object.destroy
+      end
+     end
+  end
   def procs_embedded_objects
     [self.stylesheets, self.javascripts, self.images].each do |objects|
       objects.each do |object|