From 85aadf6cb1112304949044b8a8f3d5900862ca2c Mon Sep 17 00:00:00 2001
From: Zaid Abdulla <zaid@genieacs.com>
Date: Tue, 18 Dec 2018 02:21:10 -0800
Subject: [PATCH] Fix bug saving falsy attributes

---
 lib/db.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/db.js b/lib/db.js
index b62e464..2f701e8 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -654,7 +654,7 @@ function saveDevice(deviceId, deviceData, isNew, sessionTimestamp, callback) {
           for (const attrName of Object.keys(diff[1])) {
             if (
               diff[1][attrName][1] != null &&
-              (!diff[2] || !diff[2][attrName] || !diff[2][attrName][1])
+              (!diff[2] || !diff[2][attrName] || diff[2][attrName][1] == null)
             ) {
               update["$unset"][path.concat(`_${attrName}`).join(".")] = 1;
               if (attrName === "value") {