mastodon/app/serializers/rest/preview_card_serializer.rb

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# frozen_string_literal: true
class REST::PreviewCardSerializer < ActiveModel::Serializer
include RoutingHelper
attributes :url, :title, :description, :language, :type,
:author_name, :author_url, :provider_name,
:provider_url, :html, :width, :height,
:image, :embed_url, :blurhash, :published_at
def image
object.image? ? full_asset_url(object.image.url(:original)) : nil
end
def html
Sanitize.fragment(object.html, Sanitize::Config::MASTODON_OEMBED)
end
end