Fix a bug when removing states from UI.

2015-11-08 23:28:10 -08:00
parent 6ddc18ba5d
commit f1636a7a9e
1 changed files with 2 additions and 2 deletions
@@ -128,10 +128,10 @@ export default new Polymer({
  },
  computeGroupEntityOfCard(cards, card) {
-    return cards[card].groupEntity;
+    return card in cards && cards[card].groupEntity;
  },
  computeStatesOfCard(cards, card) {
-    return cards[card].entities;
+    return card in cards && cards[card].entities;
  },
 });