Minor stylistic change to CommentThread.to_hash.

models/comment_thread.rb

@@ -153,13 +153,12 @@ class CommentThread < Content
 
   def to_hash(params={})
     doc = as_document.slice(*%w[title body course_id anonymous commentable_id created_at updated_at at_position_list closed])
-                     .merge("id" => _id)
-                     .merge("user_id" => author.id)
-                     .merge("username" => author.username)
-                     .merge("votes" => votes.slice(*%w[count up_count down_count point]))
-                     .merge("tags" => tags_array)
-                     .merge("type" => "thread")
-                     .merge("endorsed" => endorsed?)
+                     .merge("id" => _id, "user_id" => author.id,
+                            "username" => author.username,
+                            "votes" => votes.slice(*%w[count up_count down_count point]),
+                            "tags" => tags_array,
+                            "type" => "thread",
+                            "endorsed" => endorsed?)
 
     if params[:recursive]
       doc = doc.merge("children" => root_comments.map{|c| c.to_hash(recursive: true)})