From 46eea525106a5ff5d17cad8366f80056b39635ad Mon Sep 17 00:00:00 2001
From: Joren l'Ami <joren@distinct.nl>
Date: Tue, 4 Sep 2018 20:17:36 +0200
Subject: [PATCH] attachment transform did not work with null

---
 addon/transforms/attachment.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/addon/transforms/attachment.js b/addon/transforms/attachment.js
index 6853681..3821843 100644
--- a/addon/transforms/attachment.js
+++ b/addon/transforms/attachment.js
@@ -7,10 +7,16 @@ const {
 
 export default AttachmentsTransform.extend({
   deserialize: function(serialized) {
-    return this._super(serialized).pop();
+    let atts = this._super(serialized);
+    
+    if (atts.length > 0) {
+      return atts.pop();
+    } else {
+      return null;
+    }
   },
   serialize: function(deserialized) {
-    if (isNone(deserialized)) { return null; }
+    if (isNone(deserialized)) { return {}; }
     return this._super([deserialized]);
   }
 });