From 54d78c7258ebb1378e35acaf1fb1ebc40bf09a8c Mon Sep 17 00:00:00 2001
From: Luiggi Anguiano <luiggi@luiggianguiano.com.br>
Date: Tue, 1 Dec 2015 15:12:12 -0200
Subject: [PATCH] temporary fix for a collateral effect

Check if record is undefined before proceed with validation.
Memory adapter is generating undefined items in collection.
---
 lib/database.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/database.js b/lib/database.js
index b2406d0..d075711 100644
--- a/lib/database.js
+++ b/lib/database.js
@@ -447,7 +447,8 @@ Database.prototype.enforceUniqueness = function(collectionName, values, updatedI
     if(!attrDef.unique) continue;
 
     for (var index in this.data[collectionName]) {
-
+      if (typeof this.data[collectionName][index] === "undefined" || this.data[collectionName][index] === null) continue;
+      
       // Ignore uniqueness check on undefined values
       // (they shouldn't have been stored anyway)
       if (_.isUndefined(values[attrName])) continue;