json.author do
  json.partial! 'users/user', user: discuss.user
end
json.id discuss.id
json.content discuss.content
json.time time_from_now(discuss.created_at)
json.position discuss.position
json.shixun_id discuss.dis_id
json.hidden discuss.hidden
json.manage current_user.manager_of_shixun?(container)
json.reward discuss.reward
json.game_url discuss.game_url(container, current_user)
# 主贴和回复有一些不同点
if discuss.parent_id
  json.can_delete discuss.can_deleted?(current_user)
else
  json.praise_count discuss.praise_tread.where(praise_or_tread: 1).count
  json.user_praise discuss.praise_tread.select{|pt| pt.user_id == current_user.id}.length > 0 ? true : false
end