Thanks, it works , I still need to debug another.
I use
cards = models.ManyToManyField('Card')
Thanks for help.
Dennis Liou於 2015年11月17日星期二 UTC+8下午8時02分56秒寫道：
>
> Hi :
>
> I am new in Django, and I meet a bug.
>
> I was upgrade django from 1.5 to 1.8.
>
> My Django environment now is : Django 1.8.5 with python 2.7.10
>
> This is my auth models:
>
>
> Class Card(models.Model):
> cardgroup = models.CharField(_('CardGroup'), max_length=60)
> cardname = models.CharField(_('CardName'), max_length=60)
> disabled = models.BooleanField(_('disabled'), default=False)
> objects = CardManager()
>
> class Meta:
> unique_together = (cardgroup', 'cardname')
> def __unicode__(self):
> return self.name
> @property
> def name(self):
> return '%s_%s' % (.self.cardgroup, self.cardname)
>
> Class Factory(models.Model):
> sort = models.CharField(_('Short Name'), max_length=20, unique=True)
> address = models.CharField(_('Factory address'), max_length=20)
> cards = models.ManyToManyField(Card, blank=True)
>
> def __unicode__(self):
> return self.short
>
>
> After "#python manage.py migrate" twice , I got a error:
>
> ValueError: Lookup failed for model referenced by field
> core.auth.Factory.card:core.auth.core.auth.Card
>
> Because of that, I cannot syncdb ,either.
>
> My auth apps was included in a core floder.
>
>
> Help me fix the bug, please. I was coming unstuck for a mouth.
>
>
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