json.data do
  json.array! @follow_ups do |d|
    json.id d.id
    json.clazz d.clazz.name
    json.stage d.stage.name
    json.staff d.staff.user.real_name
    json.clazz EducodeSales::FollowUpTrend.clazzs.invert[d['clazz']]
    json.trend_id d['trend_id']
    json.description d['content']
    json.school d.business.department&.school&.name
    json.school_id d.business.department&.school&.id
    json.signed_department d.signed_department&.school&.name || ''
    json.created_at d.created_at.to_s
    json.business d.business.name
    json.business_id d.business.id
    json.staff_manages d.business.last_follow_up&.assign_follow_ups.present? ? (d.business.last_follow_up.assign_follow_ups.map{ |d| d.staff.user.real_name}.join("、")) : d.business.staff&.user&.real_name

  end
end

json.code 0
json.count @follow_ups.total_count