sync-cards.py 文件源码

def handle(self, *args, **options):
        path = options.get('path') or settings.CARD_IMAGES_PATH
        path = os.path.realpath(path)

        if not os.path.exists(path):
            raise CommandError('Image path does not exist')

        def check_extension(f):
            f = f.lower()
            return f[f.rfind('.'):] in SUPPORTED_FORMATS

        for *_, files in os.walk(path):
            available = set(filter(check_extension, files))
            registered = {c.path for c in Card.objects.all()}

            Card.objects.exclude(path__in=available).delete()
            for path in available.difference(registered):
                Card(path=path).save()