models.py 文件源码

def regen_tn(self) -> None:
        if not self.image:
            return
        im = PImage.open(self.image.path)
        if im.mode != 'RGB':
            im = im.convert('RGB')

        # large thumbnail
        im.thumbnail((200, 290), PImage.ANTIALIAS)

        thumb_fn = upload_announce_thumb_handler(self, os.path.splitext(self.image.name)[1])
        os.makedirs(os.path.dirname(thumb_fn), exist_ok=True)
        im.save(pjoin(settings.MEDIA_ROOT, thumb_fn), "JPEG")
        self.thumbnail.name = thumb_fn

        self.save()