models.py 文件源码

def path_and_rename(instance, filename):
    ext = filename.split('.')[-1]
    if instance.pk:
        filename = '{}.{}'.format(instance.pk, ext)
    else:
        filename = '{}.{}'.format(uuid4().hex, ext)
    dirname = force_text(datetime.datetime.now().strftime(force_str('uploads/%Y/%m/%d/')))
    return os.path.join(dirname, filename)