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Reduce number of redundant SQL queries

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This commit is contained in:
Raphael Michel
2017-10-18 09:53:57 +02:00
parent 64b67e5396
commit c6a7b52e34
3 changed files with 30 additions and 25 deletions
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22
src/pretix/presale/checkoutflow.py
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@@ -91,14 +91,16 @@ class BaseCheckoutFlowStep:
@cached_property
def invoice_address(self):
iapk = self.cart_session.get('invoice_address')
if not iapk:
return InvoiceAddress()
try:
return InvoiceAddress.objects.get(pk=iapk, order__isnull=True)
except InvoiceAddress.DoesNotExist:
return InvoiceAddress()
if not hasattr(self.request, '_checkout_flow_invoice_address'):
iapk = self.cart_session.get('invoice_address')
if not iapk:
self.request._checkout_flow_invoice_address = InvoiceAddress()
else:
try:
self.request._checkout_flow_invoice_address = InvoiceAddress.objects.get(pk=iapk, order__isnull=True)
except InvoiceAddress.DoesNotExist:
self.request._checkout_flow_invoice_address = InvoiceAddress()
return self.request._checkout_flow_invoice_address
def get_checkout_flow(event):
@@ -160,7 +162,9 @@ class AddOnsStep(CartMixin, AsyncAction, TemplateFlowStep):
requires_valid_cart = False
def is_applicable(self, request):
return get_cart(request).filter(item__addons__isnull=False).exists()
if not hasattr(request, '_checkoutflow_addons_applicable'):
request._checkoutflow_addons_applicable = get_cart(request).filter(item__addons__isnull=False).exists()
return request._checkoutflow_addons_applicable
def is_completed(self, request, warn=False):
for cartpos in get_cart(request).filter(addon_to__isnull=True).prefetch_related(