mastodon/app/views/api/v1/search/index.rabl

object @search

child :accounts, object_root: false do
  extends 'api/v1/accounts/show'
end

node(:hashtags) do |search|
  search.hashtags.map(&:name)
end

child :statuses, object_root: false do
  extends 'api/v1/statuses/show'
end