mastodon-docker-playground/app/serializers/activitypub/image_serializer.rb

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# frozen_string_literal: true
class ActivityPub::ImageSerializer < ActiveModel::Serializer
include RoutingHelper
attributes :type, :media_type, :url
attribute :focal_point, if: :focal_point?
def type
'Image'
end
def url
full_asset_url(object.url(:original))
end
def media_type
object.content_type
end
def focal_point?
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object.respond_to?(:meta) && object.meta.is_a?(Hash) && object.meta['focus'].is_a?(Hash)
end
def focal_point
[object.meta['focus']['x'], object.meta['focus']['y']]
end
end