models.py 文件源码

def save(self, *args, **kwargs):
        if self.parent and self.share_of:
            raise ValueError("Can't be both a reply and a share!")
        self.cache_data()

        if self.parent:
            self.content_type = ContentType.REPLY
            # Ensure replies have sane values
            self.visibility = self.parent.visibility
            self.pinned = False
        elif self.share_of:
            self.content_type = ContentType.SHARE

        if not self.pk:
            if not self.guid:
                self.guid = uuid4()
            if self.pinned:
                max_order = Content.objects.top_level().filter(author=self.author).aggregate(Max("order"))["order__max"]
                if max_order is not None:  # If max_order is None, there is likely to be no content yet
                    self.order = max_order + 1

        self.fix_local_uploads()
        super().save(*args, **kwargs)
        self.cache_related_object_data()