From ea0b298b78d9104695ff3b0236f797a5b9177466 Mon Sep 17 00:00:00 2001
From: Jeremy Ruston <jeremy@osmosoft.com>
Date: Mon, 14 Oct 2013 12:59:39 +0100
Subject: [PATCH] Deal with viewing date fields that don't exist

---
 core/modules/new_widgets/view.js | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/core/modules/new_widgets/view.js b/core/modules/new_widgets/view.js
index 988c96964..e78a7bd0a 100755
--- a/core/modules/new_widgets/view.js
+++ b/core/modules/new_widgets/view.js
@@ -80,7 +80,11 @@ ViewWidget.prototype.getValueAsText = function() {
 			// Calling getTiddlerText() triggers lazy loading of skinny tiddlers
 			text = this.wiki.getTiddlerText(this.viewTitle);
 		} else {
-			text = tiddler.fields[this.viewField];
+			if($tw.utils.hop(tiddler.fields,this.viewField)) {
+				text = tiddler.fields[this.viewField];				
+			} else {
+				text = "";
+			}
 		}
 	} else { // Use a special value if the tiddler is missing
 		switch(this.viewField) {
@@ -112,8 +116,12 @@ ViewWidget.prototype.getValueAsDate = function(format) {
 };
 
 ViewWidget.prototype.getValueAsRelativeDate = function(format) {
-	var d = new Date(this.getValueAsText());
-	return $tw.utils.getRelativeDate((new Date()) - d).description;
+	var value = this.getValueAsText();
+	if(value) {
+		return $tw.utils.getRelativeDate((new Date()) - (new Date(value))).description;
+	} else {
+		return "";
+	}
 };
 
 /*