ucberkeley/moocchat

model_class = EventLog
csv << ['Session chat group'] + [:created_at, :task_id, :chat_group, :name, :value].map{|attr| model_class.human_attribute_name(attr)}
@eventlog_sessions.each do |session|
  session.each do |event|
    csv << [event.task.original_chat_group,
            event.created_at,
            event.task_id,
            event.chat_group,
            event.name,
            event.value]
  end
end