From da7a8939dfce47d866641cdaa7ab29fc444db2c9 Mon Sep 17 00:00:00 2001
From: Ross Lawley <ross.lawley@gmail.com>
Date: Mon, 15 Apr 2013 07:41:04 +0000
Subject: [PATCH] Also check if a TopLevelMetaclass instance (#261)

---
 mongoengine/dereference.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mongoengine/dereference.py b/mongoengine/dereference.py
index 4df1fe87..997b7858 100644
--- a/mongoengine/dereference.py
+++ b/mongoengine/dereference.py
@@ -33,7 +33,7 @@ class DeReference(object):
         self.max_depth = max_depth
         doc_type = None
 
-        if instance and isinstance(instance, Document):
+        if instance and isinstance(instance, (Document, TopLevelDocumentMetaclass)):
             doc_type = instance._fields.get(name)
             if hasattr(doc_type, 'field'):
                 doc_type = doc_type.field