models.py 文件源码

def save(self, *args, **kwargs):
        pk_field_name = self._meta.pk.name
        value_field_name = getattr(self, 'value_field_name', 'channel_title')
        slug_field_name = getattr(self, 'slug_field_name', 'slug')
        max_interations = getattr(self, 'slug_max_iterations', 1000)
        slug_separator = getattr(self, 'slug_separator', '-')

        # fields, query set, other setup variables
        slug_field = self._meta.get_field(slug_field_name)
        slug_len = slug_field.max_length
        queryset = self.__class__.objects.all()

        # if the pk of the record is set, exclude it from the slug search
        current_pk = getattr(self, pk_field_name)

        if current_pk:
            queryset = queryset.exclude(**{pk_field_name: current_pk})

        slug = slugify(getattr(self, value_field_name)).replace('-', '_')

        if slug_len:
            slug = slug[:slug_len]

        setattr(self, slug_field.attname, slug)

        super(AutoSlugifyOnSaveVideoModel, self).save(*args, **kwargs)