From acbd16bbf3ca4574155a090f431334fb67849941 Mon Sep 17 00:00:00 2001
From: Rushabh Mehta <rmehta@gmail.com>
Date: Fri, 25 Mar 2016 17:27:17 +0530
Subject: [PATCH] [fix] track_seen is optional

---
 frappe/model/document.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frappe/model/document.py b/frappe/model/document.py
index 6c42e5d972..fb48bfd91e 100644
--- a/frappe/model/document.py
+++ b/frappe/model/document.py
@@ -678,7 +678,7 @@ class Document(BaseDocument):
 
 	def reset_seen(self):
 		'''Clear _seen property and set current user as seen'''
-		if self.meta.track_seen:
+		if getattr(self.meta, 'track_seen', False):
 			self._seen = json.dumps([frappe.session.user])
 
 	def notify_update(self):