FEATURE: search all solved topics with in:solved

plugin.rb

@@ -188,6 +188,21 @@ after_initialize do
     end
   end
 
+  require_dependency 'search'
+
+  #TODO Remove when plugin is 1.0
+  if Search.respond_to? :advanced_filter
+    Search.advanced_filter(/in:solved/) do |posts|
+      posts.where("topics.id IN (
+        SELECT tc.topic_id
+        FROM topic_custom_fields tc
+        WHERE tc.name = 'accepted_answer_post_id' AND
+                        tc.value IS NOT NULL
+        )")
+
+    end
+  end
+
   require_dependency 'topic_list_item_serializer'
 
   class ::TopicListItemSerializer