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Fix for postgres requring an explicit definition of what the output field type is with summing mixed fields

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Tom Price
2015-05-29 15:59:08 +01:00
parent 0f2733c2f1
commit 2da8980be4
1 changed files with 3 additions and 1 deletions
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4
RIGS/models.py
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@@ -297,7 +297,9 @@ class Event(models.Model, RevisionMixin):
#total = 0.0
#for item in self.items.filter(cost__gt=0).extra(select="SUM(cost * quantity) AS sum"):
# total += item.sum
total = EventItem.objects.filter(event=self).aggregate(sum_total=models.Sum(models.F('cost')*models.F('quantity')))['sum_total']
total = EventItem.objects.filter(event=self).aggregate(
sum_total=models.Sum(models.F('cost')*models.F('quantity'), output_field=models.DecimalField(max_digits=10, decimal_places=2))
)['sum_total']
if total:
return total
return Decimal("0.00")