Hi Folks,
I have a Donation object in my model which includes:
amount = models.DecimalField(max_digits=12,decimal_places=2,core=True)
patron = models.ForeignKey(Patron)
From my Patron object, I want to select the total donations for that patron,
so something like:
def total_donation(self):
lAllDonations = Donation.objects.filter(patron__id =
self.id).iterator()
lDonationSum = 0.00
for lEachDonation in lAllDonations:
lDonationSum = lDonationSum + lEachDonation.amount
return lDonationSum
I can't get this to work, and I'm sure there's a better way anyway.
Any suggestions?
Thanks,
Tim.
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