records = RecordModel.objects.all()
placements = [{'decklist': DeckList(name=record.decklist.name, url=record.decklist.url), 'placement': record.placement} for record in records if record.decklist.url]
clustering = Clustering(records=placements)
records = RecordModel.objects.all()
placements = [{'decklist': DeckList(name=record.decklist.name, url=record.decklist.url), 'placement': record.placement} for record in records if record.decklist.url]
clustering = Clustering(records=placements)