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Fix migration for large databases

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Raphael Michel
2025-06-30 19:45:46 +02:00
parent 14ed6982a5
commit 19a7042c16
1 changed files with 2 additions and 2 deletions
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4
src/pretix/base/migrations/0283_taxrule_default_taxrule_backfill.py
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@@ -10,7 +10,7 @@ def set_default_tax_rate(app, schema_editor):
TaxRule = app.get_model('pretixbase', 'TaxRule')
# Handling of events with tax_rate_default set
for s in Event_SettingsStore.objects.filter(key="tax_rate_default"):
for s in Event_SettingsStore.objects.filter(key="tax_rate_default").iterator():
updated = TaxRule.objects.filter(pk=s.value, event_id=s.object_id).update(default=True)
if updated:
# Delete deprecated settings key
@@ -29,7 +29,7 @@ def set_default_tax_rate(app, schema_editor):
cache.delete('hierarkey_{}_{}'.format('event', s.object_id))
# Handling of events with tax_rate_default not set
for e in Event.objects.only("pk").exclude(Exists(TaxRule.objects.filter(default=True, event_id=OuterRef("pk")))):
for e in Event.objects.only("pk").exclude(Exists(TaxRule.objects.filter(default=True, event_id=OuterRef("pk")))).iterator():
fav_tax_rules = e.tax_rules.annotate(c=Count("item")).order_by("-c", "pk")[:1]
if fav_tax_rules:
fav_tax_rules[0].default = True