Check category for custom fields

assets/javascripts/discourse/templates/connectors/topic-above-post-stream/topic-title-voting.hbs

@@ -2,7 +2,11 @@
 <div class="voting title-voting">
 	<div class="voting-wrapper">
 		{{#if siteSettings.feature_voting_show_who_voted}}
-			<a href {{action "showWhoVoted"}} class="vote-count">{{model.vote_count}}</a>
+			{{#if model.has_votes}}
+				<a href {{action "showWhoVoted"}} class="vote-count">{{model.vote_count}}</a>
+			{{else}}
+				<div class="vote-count">{{model.vote_count}}</div>
+			{{/if}}	
 		{{else}}
 			<div class="vote-count">{{model.vote_count}}</div>
 		{{/if}}

assets/javascripts/initializers/feature-voting.js.es6

@@ -70,7 +70,12 @@ function  startVoting(api){
     getWhoVoted() {
       const { attrs, state } = this;
       var users = attrs.who_voted;
-      return state.whoVotedUsers = users.map(whoVotedAvatars);
+      if (users.length){
+        return state.whoVotedUsers = users.map(whoVotedAvatars);
+      }
+      else{
+        return state.whoVotedUsers = [];
+      }
     }
   });
 }

plugin.rb

@@ -16,10 +16,10 @@ after_initialize do
 
   require_dependency 'topic_view_serializer'
   class ::TopicViewSerializer
-    attributes :can_vote, :single_vote, :vote_count, :user_voted, :who_voted
+    attributes :can_vote, :single_vote, :vote_count, :has_votes, :user_voted, :who_voted
 
     def can_vote
-      return object.topic.category.custom_fields["enable_topic_voting"]
+      return object.topic.category.respond_to?(:custom_fields) ? !!object.topic.category.custom_fields["enable_topic_voting"] : false
     end
 
     def single_vote
@@ -34,6 +34,14 @@ after_initialize do
       object.topic.vote_count
     end
 
+    def has_votes
+      if object.topic.vote_count.to_i > 0
+        return true
+      else
+        return false
+      end
+    end
+
     def user_voted
       user = scope.user
       if user && user.custom_fields["votes"]