From 86239cc7778135819c6697f24839bb3fb7d64c2e Mon Sep 17 00:00:00 2001
From: Shannon <sdeminick@gmail.com>
Date: Thu, 20 Aug 2015 12:45:42 +0200
Subject: [PATCH] fixes date time picker if the format is cleared from
 pre-values, it will revert to default.

---
 .../views/propertyeditors/datepicker/datepicker.controller.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/datepicker/datepicker.controller.js b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/datepicker/datepicker.controller.js
index 6d3afd442d..e879e84acb 100644
--- a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/datepicker/datepicker.controller.js
+++ b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/datepicker/datepicker.controller.js
@@ -17,6 +17,10 @@ function dateTimePickerController($scope, notificationsService, assetsService, a
 
     //map the user config
     $scope.model.config = angular.extend(config, $scope.model.config);
+    //ensure the format doesn't get overwritten with an empty string
+    if ($scope.model.config.format === "" || $scope.model.config.format === undefined || $scope.model.config.format === null) {
+        $scope.model.config.format = "YYYY-MM-DD HH:mm:ss";
+    }
 
     $scope.hasDatetimePickerValue = $scope.model.value ? true : false;
     $scope.datetimePickerValue = null;