app/serializers/audio_recording_serializer.rb
require 'common_attributes'
class AudioRecordingInSiteSerializer < CommonAttributesSerializer
attributes :id, :name
end
class AudioRecordingSerializer < CommonAttributesSerializer
attributes :id, :bit_rate_bps, :channels, :data_length_bytes,
:duration_seconds, :file_hash, :media_type, :notes,
:recorded_date, :sample_rate_hertz, :status, :uploader_id,
:uuid
has_one :site, :serializer => AudioRecordingInSiteSerializer
end