reynir/bornhack-website
1
0
Fork 0
Code Issues Pull requests 1 Releases Wiki Activity

Avoid rounding down.

Browse source
This commit is contained in:
Víðir Valberg Guðmundsson 2021-07-29 17:13:58 +02:00
parent 198f6d26c7
commit 4ed6392554
1 changed files with 8 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/tickets/models.py
View file

@ -2,11 +2,12 @@ import base64
import hashlib import hashlib
import io import io
import logging import logging
from decimal import Decimal
import qrcode import qrcode
from django.conf import settings from django.conf import settings
from django.db import models from django.db import models
from django.db.models import Count, F, OuterRef, Subquery, Sum from django.db.models import Count, ExpressionWrapper, F, OuterRef, Subquery, Sum
from django.urls import reverse_lazy from django.urls import reverse_lazy
from django.utils.translation import ugettext_lazy as _ from django.utils.translation import ugettext_lazy as _
@ -56,7 +57,12 @@ class TicketTypeQuerySet(models.QuerySet):
avg_ticket_price = Subquery( avg_ticket_price = Subquery(
TicketType.objects.annotate(units=Sum(quantity)) TicketType.objects.annotate(units=Sum(quantity))
.annotate(income=Sum(income)) .annotate(income=Sum(income))
.annotate(avg_ticket_price=F("income") / F("units")) .annotate(
avg_ticket_price=ExpressionWrapper(
F("income") * Decimal("1.0") / F("units"),
output_field=models.DecimalField(),
)
)
.filter(pk=OuterRef("pk")) .filter(pk=OuterRef("pk"))
.values("avg_ticket_price")[:1], .values("avg_ticket_price")[:1],
output_field=models.DecimalField(), output_field=models.DecimalField(),