From 1ecb456a3c517fcbbcbc3ceb49e975ab98936e06 Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Mon, 20 Mar 2017 22:23:52 -0400
Subject: [PATCH] Support 1 and -1 in onewayCheck field (closes #3910)

---
 modules/ui/fields/check.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/ui/fields/check.js b/modules/ui/fields/check.js
index e660d6aaa..4c38222aa 100644
--- a/modules/ui/fields/check.js
+++ b/modules/ui/fields/check.js
@@ -149,7 +149,11 @@ export function uiFieldCheck(field, context) {
 
     check.tags = function(tags) {
         checkImpliedYes();
-        value = tags[field.key];
+        value = tags[field.key] && tags[field.key].toLowerCase();
+
+        if (field.type === 'onewayCheck' && (value === '1' || value === '-1')) {
+            value = 'yes';
+        }
 
         input
             .property('indeterminate', field.type !== 'defaultCheck' && !value)