From 4e552ec514c28c6334603efa769a696b605b31f3 Mon Sep 17 00:00:00 2001
From: Nick Martin <nim@meteor.com>
Date: Thu, 16 Feb 2012 16:24:58 -0800
Subject: [PATCH] Don't send empty objects to the client.

---
 packages/livedata/livedata_server.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/packages/livedata/livedata_server.js b/packages/livedata/livedata_server.js
index 17f08da420..1f09974019 100644
--- a/packages/livedata/livedata_server.js
+++ b/packages/livedata/livedata_server.js
@@ -107,12 +107,17 @@ _.extend(Meteor._LivedataServer.prototype, {
         var msg = {msg: 'data', collection: collection_name, id: id};
 
         if (!old_obj) {
+          // New object. Send an insert down to the client.
           var obj_to_send = _.extend({}, new_obj);
           delete obj_to_send._id;
-          msg.set = obj_to_send;
-          socket.send(JSON.stringify(msg));
+          if (_.keys(obj_to_send).length) {
+            msg.set = obj_to_send;
+            socket.send(JSON.stringify(msg));
+          }
 
         } else {
+          // Old object. Check for updates and send changes attributes
+          // to the client.
           var set = {};
           var unset = [];