CGM_Public/pretix_original
2
0
Fork 1
mirror of https://github.com/pretix/pretix.git synced 2026-05-04 15:04:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

Orders API: Reduce query load imposed by ?pdf_data=true by multiple orders of magnitude

Browse Source
This commit is contained in:
Raphael Michel
2018-09-25 17:39:58 +02:00
parent abd679820f
commit feb262644e
4 changed files with 45 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
src/pretix/api/views/order.py
View File

@@ -3,7 +3,7 @@ import datetime
import django_filters
import pytz
from django.db import transaction
from django.db.models import Q
from django.db.models import Prefetch, Q
from django.db.models.functions import Concat
from django.http import FileResponse
from django.shortcuts import get_object_or_404
@@ -72,13 +72,34 @@ class OrderViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
return ctx
def get_queryset(self):
return self.request.event.orders.prefetch_related(
'positions', 'positions__checkins', 'positions__item', 'positions__answers', 'positions__answers__options',
'positions__answers__question', 'fees', 'payments', 'refunds', 'refunds__payment'
qs = self.request.event.orders.prefetch_related(
'fees', 'payments', 'refunds', 'refunds__payment'
).select_related(
'invoice_address'
)
if self.request.query_params.get('pdf_data', 'false') == 'true':
qs = qs.prefetch_related(
Prefetch(
'positions',
OrderPosition.objects.all().prefetch_related(
'checkins', 'item', 'variation', 'answers', 'answers__options', 'answers__question',
Prefetch('addons', OrderPosition.objects.select_related('item', 'variation'))
)
)
)
else:
qs = qs.prefetch_related(
Prefetch(
'positions',
OrderPosition.objects.all().prefetch_related(
'checkins', 'item', 'variation', 'answers', 'answers__options', 'answers__question',
)
)
)
return qs
def _get_output_provider(self, identifier):
responses = register_ticket_outputs.send(self.request.event)
for receiver, response in responses: