models.py 文件源码

def get_recommendations(self):
        from . import tasks
        identifiers = Identifier.objects.filter(
            source='isbn',
            manifestations__in=self.manifestations.all())
        grouped_identifier_ids = group(
            tasks.get_recommendations.s(i.pk)
            for i in identifiers)().get()
        result_identifier_ids = itertools.chain.from_iterable(grouped_identifier_ids)
        works = Work.objects.filter(pk__in=result_identifier_ids)
        return works