On Sat, 2007-04-28 at 23:27 +0000, Henrik Lied wrote:
> Thank you for your example, Tim.
> I'm sorry, but the problem with it is that it isn't symmetrical.
>
> A part of my Profile-model looks like this:
> class Profile(models.Model):
> user = models.ForeignKey(User)
> friends = models.ManyToManyField("self")
>
> This makes it very easy to create and maintain a relationship
> between users - but I have no idea how to specify the friendship
> type. Is it even possible?
Go back and have another look at Tim's suggestion. It is the right
approach. The problem isn't that the relationship is symmetrical, you're
right: the problem is that you cannot attach any extra attributes to the
relationship table (the table that connects the two ends) using
ManyToManyField.
Instead of trying to make the relationship a direct Many-to-Many, which
does not let you put any fields on the intermediate table, you need to
construct the intermediate table yourself via a couple of joins.
See, also
http://www.djangoproject.com/documentation/models/m2m_intermediary/ for
a similar example.
Regards,
Malcolm
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