Refs #6449; Fix tags field when it is empty6449-fix-timetables-editor

1 files changed, 1 insertions, 1 deletions

diff --git a/app/javascript/time_tables/reducers/metas.js b/app/javascript/time_tables/reducers/metas.js
index 87917f580..012f29511 100644
--- a/app/javascript/time_tables/reducers/metas.js
+++ b/app/javascript/time_tables/reducers/metas.js
@@ -31,7 +31,7 @@ export default function metas(state = {}, action) {
       return assign({}, state, {color: action.color})
     case 'UPDATE_SELECT_TAG':
       let tags = [...state.tags]
-      if(tags[tags.length-1].name != action.selectedItem.name){
+      if(tags.length == 0 || tags[tags.length-1].name != action.selectedItem.name){
         tags.push(action.selectedItem)
       }
       return assign({}, state, {tags: tags})