django 模型设计问题

获取 title 一直提示这个错误 AttributeError: 'QuerySet' object has no attribute 'title' 但是明明库里面有这个 title 字段的

# Create your models here.


class article(models.Model):
    title = models.CharField(u'标题', max_length=60)
    category = models.CharField(u'标签', max_length=10, null=False)
    createtime = models.DateTimeField(u'createtime', auto_now_add=True)
    content = models.TextField(u'内容', blank=True, null=True)

    def __str__(self):
        return self.title

    class mete:
        ordering = ['-createtime_time']

class Tag(models.Model):
    tag_name = models.CharField(max_length=10)

    def __str__(self):
        return self.tag_name