Really no ideas?
Chris
On 25 Aug., 21:25, "ckar...@googlemail.com" <ckar...@googlemail.com>
wrote:
> Hi,
>
> first, my models:
>
> class Connection(models.Model):
> p1 = models.ForeignKey(SinglePoint, related_name='p1_set',
> help_text="Punkt 1")
> p2 = models.ForeignKey(SinglePoint, related_name='p2_set',
> help_text="Punkt 2")
> ...
> class Meta:
> unique_together = (('p1', 'p2'),('p2','p1'))
>
> class SinglePoint(models.Model):
> name = models.CharField(max_length=100)
> ...
>
> With that code I can create 2 Connections like:
>
> Connection 1: p1 = A, p2 = B
> Connection 2: p1 = B, p2 = A
>
> But I want to disallow that way, I wish to have just
>
> Connection 1: p1 = A, p2 = B
> OR
> Connection 2: p1 = B, p2 = A
>
> and not both. How is this possible?
>
> Thank you very much!!
>
> Christian
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