class Category(MPTTModel):

    name = models.CharField(max_length=200, db_index=True)

    slug = models.SlugField(max_length=200, db_index=True, unique=True)

    parent = TreeForeignKey('self', on_delete=models.CASCADE, null=True, blank=True, related_name='children')

​

class MPTTMeta:

    order_insertion_by = ['name']

​

    class Meta:

        ordering = ('name',)

        verbose_name = 'Категория'

        verbose_name_plural = 'Категории'

​

    def get_absolute_url(self):

        return reverse('shop:product_list_by_category', args=[self.slug])

​

    def __str__(self):

        return self.name