On Thu, Oct 16, 2008 at 11:46 AM, nostradamnit <[EMAIL PROTECTED]>wrote:
>
> Nope, doesn't work?!? I've tried every possible combination that I can
> think of. Is there a known method of inheriting/using/appropriating an
> existing model in a new model.py? My code works with an independent
> Country model, but I don't want a new Country table, I want to use the
> existing one... There must be a way to do this.
>
First, the problem you are having with the import is that you want to import
from *models*.
from satchmo.l10n.models import Country
However, you can't just extend a Django model and add to the object. Not
like you are thinking anyway. What you want to do is to make a new model,
and link the one you want to "extend" with a OneToOne field. Here's an
example from tieredpricing. I wanted to extend the
satchmo.contrib.auth.models.Group object to give discounts to people in
certain groups.
class PricingTier(models.Model):
"""A specific pricing tier, such as "trade customers"
"""
group = models.OneToOneField(Group, help_text=_('The user group that
will receive the discount'))
title = models.CharField(_('Title'), max_length=50)
discount_percent = models.DecimalField(_("Discount Percent"), null=True,
blank=True,
max_digits=5, decimal_places=2,
help_text=_("This is the discount that will be applied to every
product if no explicit Tiered Price exists for that product. Leave as 0 if
you don't want any automatic discount in that case."))
Please refer to
http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.OneToOneFieldfor
quite usable and understandable documentation about how this works.
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