class NewsTitle(models.Model):

    title = models.CharField(max_length=64,verbose_name='新闻标题')

    count = models.PositiveIntegerField(verbose_name='点击次数',default=0)

    src = models.ImageField(upload_to='www/',verbose_name='新闻图片')

    is_del = models.BooleanField(verbose_name='删除', default=False)

    time = models.DateTimeField(auto_now=True)

    class Meta:

        verbose_name = '新闻标题'

        verbose_name_plural = verbose_name

    def __str__(self):

        return self.title

    def viewed(self):

        self.count += 1

        self.save(update_fields=['count'])

    def retrieve(self,request,*args,**kwargs):

        ret = {'code': 1000, 'data': None}

        pk = kwargs.get('pk')

        try:

            obj = models.NewsTitle.objects.filter(id=pk,is_del=False)

            obj.first().viewed()

            ser = sel.GetNewsInfoSerializers(instance=obj, many=True)

            ret['data'] = ser.data

        except Exception as e:

            ret['code'] = 1002

            ret['err'] = e

        return Response(ret)