On Apr 1, 6:43 am, Denis <deuns.marti...@gmail.com> wrote:
> I am developing a store using Satchmo, and I want the ability to save
> quotes; that's snapshots of the current cart, and I want to store the
> history of all the quotes in the database. My current models look like
> this:
>
> class QuoteItem(models.Model, Product):
> quantity = models.PositiveIntegerField(_('Quantity'))
> price_incl_vat = models.DecimalField(_("Price incl. VAT"),
> max_digits=10, decimal_places=2)
>
> class Quote(models.Model):
> items = models.ManyToManyField('QuoteItem')
>
> In Django my inherited Product class is represented as a foreign key
> in the QuoteItem table. The problem is that the product price is
> subject to change in the future, but the Quote shouldn't change.
> I want a copy of the product attributes in QuoteItem, instead of a
> foreign key.
Yes, that's the right way to approach this problem.
> Is there a clean way to do, or do I have to copy all the attributes
> here manually?
You could serialize your product instance into a TextField in
QuoteItem:
from django.core import serializers
serialized_product = serializers.serialize("json", [product_instance])
-Rajesh D
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