json.extract! @module, :id, :name, :position, :url

mds = @module.competition_module_md_contents
json.md_contents mds.each do |md|
  json.md_name md.name
  json.md_content md.content
  json.competition_stage_id md.competition_stage_id
  json.created_at md.created_at.strftime('%Y-%m-%d %H:%M:%S')
  json.attachments do
    json.array! md.attachments, partial: 'attachments/attachment_simple', as: :attachment
  end
end