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Performance improvement of organizer-level event list

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Raphael Michel
2021-05-28 10:26:27 +02:00
parent b857c83193
commit 634aee14b5
1 changed files with 10 additions and 3 deletions
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src/pretix/base/models/event.py
+10 -3
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@@ -254,15 +254,22 @@ class EventMixin:
).order_by().values_list('quotas__pk').annotate( ).order_by().values_list('quotas__pk').annotate(
items=GroupConcat('pk', delimiter=',') items=GroupConcat('pk', delimiter=',')
).values('items') ).values('items')
quota_base_qs = Quota.objects.using(settings.DATABASE_REPLICA).filter(
ignore_for_event_availability=False
)
if cls is Event:
# Special case for the list of events: We only want to compute quotas for events if they are
# not an event series.
quota_base_qs = quota_base_qs.filter(subevent__isnull=True)
return qs.annotate( return qs.annotate(
has_paid_item=Exists(Item.objects.filter(event_id=OuterRef(cls._event_id), default_price__gt=0)) has_paid_item=Exists(Item.objects.filter(event_id=OuterRef(cls._event_id), default_price__gt=0))
).prefetch_related( ).prefetch_related(
Prefetch( Prefetch(
'quotas', 'quotas',
to_attr='active_quotas', to_attr='active_quotas',
queryset=Quota.objects.using(settings.DATABASE_REPLICA).filter( queryset=quota_base_qs.annotate(
ignore_for_event_availability=False
).annotate(
active_items=Subquery(sq_active_item, output_field=models.TextField()), active_items=Subquery(sq_active_item, output_field=models.TextField()),
active_variations=Subquery(sq_active_variation, output_field=models.TextField()), active_variations=Subquery(sq_active_variation, output_field=models.TextField()),
).exclude( ).exclude(