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Minor SQL performance improvements

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This commit is contained in:
Raphael Michel
2020-04-17 12:14:37 +02:00
parent ed5726fc0c
commit e70f593a94
2 changed files with 10 additions and 8 deletions
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3
src/pretix/base/models/items.py
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@@ -455,7 +455,8 @@ class Item(LoggedModel):
t = TaxedPrice(gross=price, net=price, tax=Decimal('0.00'),
rate=Decimal('0.00'), name='')
else:
t = self.tax_rule.tax(price, base_price_is=base_price_is, currency=currency)
t = self.tax_rule.tax(price, base_price_is=base_price_is,
currency=currency or self.event.currency)
if include_bundled:
for b in self.bundles.all():

15
src/pretix/presale/views/__init__.py
View File

@@ -74,10 +74,11 @@ class CartMixin:
cartpos = self.positions
lcp = list(cartpos)
has_addons = {cp.addon_to.pk for cp in lcp if cp.addon_to}
has_addons = {cp.addon_to_id for cp in lcp if cp.addon_to_id}
pos_additional_fields = defaultdict(list)
for cp in lcp:
cp.item.event = self.request.event # will save some SQL queries
responses = question_form_fields.send(sender=self.request.event, position=cp)
data = cp.meta_info_data
for r, response in sorted(responses, key=lambda r: str(r[0])):
@@ -93,13 +94,13 @@ class CartMixin:
# Django is unable to join related models in a .values() query
def keyfunc(pos):
if isinstance(pos, OrderPosition):
if pos.addon_to:
if pos.addon_to_id:
i = pos.addon_to.positionid
else:
i = pos.positionid
else:
if pos.addon_to:
i = pos.addon_to.pk
if pos.addon_to_id:
i = pos.addon_to_id
else:
i = pos.pk
@@ -108,8 +109,8 @@ class CartMixin:
or self.request.event.settings.attendee_emails_asked
or pos_additional_fields.get(pos.pk)
)
addon_penalty = 1 if pos.addon_to else 0
if downloads or pos.pk in has_addons or pos.addon_to:
addon_penalty = 1 if pos.addon_to_id else 0
if downloads or pos.pk in has_addons or pos.addon_to_id:
return i, addon_penalty, pos.pk, 0, 0, 0, 0, (pos.subevent_id or 0), (pos.seat_id or 0)
if answers and (has_attendee_data or pos.item.questions.all()):
return i, addon_penalty, pos.pk, 0, 0, 0, 0, (pos.subevent_id or 0), (pos.seat_id or 0)
@@ -202,7 +203,7 @@ def get_cart(request):
'item', 'variation'
).select_related(
'item', 'variation', 'subevent', 'subevent__event', 'subevent__event__organizer',
'item__tax_rule'
'item__tax_rule', 'addon_to'
)
for cp in request._cart_cache:
cp.event = request.event # Populate field with known value to save queries