Added empty box icon to unsolved topics

assets/javascripts/discourse/initializers/extend-for-solved-button.js.es6

@@ -223,6 +223,13 @@ export default {
             title: I18n.t('solved.has_accepted_answer'),
             icon: 'check-square-o'
           });
+        }else if(this.topic.can_have_answer && this.siteSettings.solved_enabled && this.siteSettings.empty_box_on_unsolved){
+          results.push({
+            openTag: 'span',
+            closeTag: 'span',
+            title: I18n.t('solved.no_accepted_answer'),
+            icon: 'square-o'
+          });
         }
         return results;
       }.property()

config/locales/server.en.yml

@@ -3,6 +3,7 @@ en:
     solved_enabled: "Enable solved plugin, allow users to select solutions for topics"
     allow_solved_on_all_topics: "Allow users to select solutions on all topics (by default you control this by editing categories)"
     accept_all_solutions_trust_level: "Minimum trust level required to accept solutions on any topic (even when not OP)"
+    empty_box_on_unsolved: "Display an empty box next to unsolved topics"
   reports:
     accepted_solutions:
       title: "Accepted solutions"

config/settings.yml

@@ -8,3 +8,6 @@ plugins:
   accept_all_solutions_trust_level:
     default: 4
     client: true
+  empty_box_on_unsolved:
+    default: false
+    client: true

plugin.rb

@@ -340,11 +340,17 @@ SQL
   require_dependency 'topic_list_item_serializer'
 
   class ::TopicListItemSerializer
-    attributes :has_accepted_answer
+    attributes :has_accepted_answer, :can_have_answer
 
     def has_accepted_answer
       object.custom_fields["accepted_answer_post_id"] ? true : false
     end
+
+    def can_have_answer
+      return true if SiteSetting.allow_solved_on_all_topics
+
+      return scope.allow_accepted_answers_on_category?(object.category_id)
+    end
   end
 
   TopicList.preloaded_custom_fields << "accepted_answer_post_id" if TopicList.respond_to? :preloaded_custom_fields