class TopicListItemSerializer < ListableTopicSerializer attributes :views, :like_count, :starred, :has_summary, :archetype, :last_poster_username, :category_id has_many :posters, serializer: TopicPosterSerializer, embed: :objects def starred object.user_data.starred? end alias :include_starred? :has_user_data def posters object.posters || [] end def last_poster_username object.posters.find { |poster| poster.user.id == object.last_post_user_id }.try(:user).try(:username) end end