From 1f3d25e89be343f065914c03630e3f130cf54c36 Mon Sep 17 00:00:00 2001
From: Welling Guzman <hola@wellingguzman.com>
Date: Fri, 16 Jun 2017 14:27:19 -0400
Subject: [PATCH] avoid using _.each on set method

Models with an attributed named 'length' will make this each work as an array unexpectedly
---
 backbone.trackit.js | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/backbone.trackit.js b/backbone.trackit.js
index cb1354e..84304b4 100644
--- a/backbone.trackit.js
+++ b/backbone.trackit.js
@@ -159,12 +159,13 @@
     ret = oldSet.call(this, attrs, options);
 
     if (this._trackingChanges && !options.silent && !options.trackit_silent) {
-      _.each(attrs, _.bind(function(val, key) {
-        if (_.isEqual(this._originalAttrs[key], val))
-          delete this._unsavedChanges[key];
-        else
-          this._unsavedChanges[key] = val;
-      }, this));
+        for (key in attrs) {
+            val = attrs[key];
+            if (_.isEqual(this._originalAttrs[key], val))
+                delete this._unsavedChanges[key];
+            else
+                this._unsavedChanges[key] = val;
+        }
       this._triggerUnsavedChanges();
     }
     return ret;