app/serializers/user_info_serializer.rb
class UserInfoSerializer < ActiveModel::Serializer
embed :ids, include: true
attributes :id, :life_spent_on_anime, :anime_watched, :top_genres
has_many :favorites, polymorphic: true
def id
object.name
end
def anime_watched
object.library_entries.where(status: "Completed").count
end
def top_genres
object.top_genres
end
end