使用递归实现多级分类
实例一
class Category(models.Model):
name = models.CharField(max_length=500, verbose_name='分类名称')
desc = models.CharField(max_length=500, verbose_name='分类描述',blank=True)
sort = models.IntegerField(default=0, verbose_name='排序值')
parent = models.ForeignKey('self', default=0, null=True, blank=True, related_name='children', verbose_name='上级分类',
limit_choices_to={
'is_abort': False, 'is_root': True})
is_root = models.BooleanField(default=False, verbose_name='是否是一级分类')
image = models.ImageField(upload_to='category/%Y/%m', verbose_name='分类图片', null=True, blank=True)
is_abort