Class Category

blog/models.py:191–251

文章分类

class Category(BaseModel):
    """文章分类"""
    name = models.CharField(_('category name'), max_length=30, unique=True)
    parent_category = models.ForeignKey(
        'self',
        verbose_name=_('parent category'),
        blank=True,
        null=True,
        on_delete=models.CASCADE)
    slug = models.SlugField(default='no-slug', max_length=60, blank=True)
    index = models.IntegerField(default=0, verbose_name=_('index'))

    class Meta:
        ordering = ['-index']
        verbose_name = _('category')
        verbose_name_plural = verbose_name

    def get_absolute_url(self):
        return reverse(
            'blog:category_detail', kwargs={
                'category_name': self.slug})

    def __str__(self):
        return self.name

    @cache_decorator(CacheTimeout.HOUR_10)
    def get_category_tree(self):
        """
        递归获得分类目录的父级
        :return:
        """
        categorys = []

        def parse(category):
            categorys.append(category)
            if category.parent_category:
                parse(category.parent_category)

        parse(self)
        return categorys

    @cache_decorator(CacheTimeout.HOUR_10)
    def get_sub_categorys(self):
        """
        获得当前分类目录所有子集
        :return:
        """
        categorys = []
        all_categorys = Category.objects.all()

        def parse(category):
            if category not in categorys:
                categorys.append(category)
            childs = all_categorys.filter(parent_category=category)
            for child in childs:
                if category not in categorys:
                    categorys.append(child)
                parse(child)