From 64205f3333daf448a10e3464952e4b58472aafde Mon Sep 17 00:00:00 2001
From: Simon Willison <simonw@eventbrite.com>
Date: Wed, 27 Jun 2018 08:17:42 -0700
Subject: [PATCH] Respect _labels=on even if first row has a null, closes #5

---
 src/DatasetteVega.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/DatasetteVega.js b/src/DatasetteVega.js
index 1708921..9d0d96c 100644
--- a/src/DatasetteVega.js
+++ b/src/DatasetteVega.js
@@ -72,9 +72,14 @@ class DatasetteVega extends Component {
     fetch(url).then(r => r.json()).then(data => {
       if (data.length > 1) {
         // Set columns to first item's keys
-        const columns = Object.keys(data[0]).map(
-          key => (data[0][key] && data[0][key].label) ? `${key}.label` : key
-        );
+        const columns = Object.keys(data[0]).map(key => {
+          // Do ANY of these rows have a .label property?
+          if (data.filter(d => (d[key] || '').label !== undefined).length) {
+            return `${key}.label`;
+          } else {
+            return key;
+          }
+        });
         this.setState({
           columns: columns,
           x_column: columns[0],