discourse/app/models/topic_poster.rb

class TopicPoster < OpenStruct
  include ActiveModel::Serialization

  attr_accessor :user, :description, :extras, :id

  def attributes
    {'user' => user,
     'description' => description,
     'extras' => extras,
     'id' => id}
  end

  # TODO: Remove when old list is removed
  def [](attr)
    send(attr)
  end
end