django 优秀代码阅读总结（持续更新）

class Blog(models.Model):
    STATUS_CHOICES = (
        ('d', u"草稿"),
        ('p', u"发布"),
    )

    title = models.CharField(u'标题', max_length=150, db_index=True, unique=True)
    link = models.CharField(u'链接', max_length=150, default='')
    link.help_text = u"Cool URIs don't change"
    snippet = models.CharField(u'摘要', max_length=500, default='')
    content = models.TextField(u'内容', )

    add_time = models.DateTimeField(u'创建时间', auto_now_add=True)
    publish_time = models.DateTimeField(u'发表时间', null=True)
    update_time = models.DateTimeField(u'修改时间', auto_now=True)
    status = models.CharField(u'状态', max_length=1, choices=STATUS_CHOICES, default=STATUS_CHOICES[0][0])

    is_public = models.BooleanField(u'公开', default=True)
    is_top = models.BooleanField(u'置顶', default=False)
    access_count = models.IntegerField(u'浏览量', default=1, editable=False)
    category = models.ForeignKey('Category', verbose_name=u'所属分类')
    tags = models.ManyToManyField('Tag', verbose_name=u'标签集合', null=True, blank=True)
    tags.help_text = ''
    author = models.ForeignKey(User, verbose_name=u'作者')

    def save(self, *args, **kwargs):
        self.link = slugify(self.link)
        self.snippet = self.snippet or self.content[:140]
        super(Blog, self).save(*args, **kwargs)

    def get_absolute_url(self):
        return reverse('blog:blog_detail', args=(self.id, self.link))

    def __unicode__(self):
        return self.title