def _calculate(
price,
product=None,
shipping_method=None,
cart=None,
order=None,
bare=False,
**kwargs
):
if bare or price is None or DISCOUNT in price:
return
discounts = Discount.objects.none()
if product:
discounts = Discount.objects.filter(
applies_to=APPLIES_TO_PRODUCT_PRICE
).for_product(product)
elif shipping_method:
discounts = Discount.objects.filter(
applies_to=APPLIES_TO_SHIPPING_COSTS
)
elif cart or order:
discounts = Discount.objects.filter(applies_to=APPLIES_TO_TOTAL)
if 'customer_group' in kwargs:
customer_group = kwargs['customer_group']
else:
CustomerGroup.current_customer_group()
now = timezone.now()
discounts = discounts.filter(active=True)
discounts = discounts.filter(
Q(valid_from__isnull=True) | Q(
valid_from__lte=now
)
)
discounts = discounts.filter(
Q(valid_to__isnull=True) | Q(
valid_to__gte=now
)
)
discounts = discounts.filter(
Q(customer_groups=customer_group) | Q(
customer_groups=None
)
)
discounts = discounts.polymorphic()
for discount in discounts:
price = discount.apply(price)
yield chaining.update(price=price)
yield price
def _calculate(
price,
product=None,
shipping_method=None,
payment_method=None,
bare=False,
**kwargs
):
if bare or price is None or TAX in price:
return
tax_policy = settings_manager['tax_policy']
if tax_policy:
address_type = POLICY_CUSTOMER_ADDRESS_TYPES.get(tax_policy, None)
zone = AddressZone.get_current(address_type)
taxes = Tax.objects.spans(zone)
tax_rules = TaxRule.objects.none()
if product:
product_classes = ProductTaxClass.objects.for_product(product)
tax_rules = TaxRule.objects.filter(product_classes__in=product_classes)
elif shipping_method:
tax_rules = TaxRule.objects.filter(applies_to_shipping_costs=True)
elif payment_method:
tax_rules = TaxRule.objects.filter(applies_to_payment_costs=True)
if 'customer_group' in kwargs:
customer_group = kwargs['customer_group']
else:
CustomerGroup.current_customer_group()
tax_rules = tax_rules.filter(
Q(customer_groups=customer_group) | Q(
customer_groups=None
)
)
taxes = taxes.polymorphic().filter(tax_rules__in=tax_rules).distinct()
for tax in taxes:
price = tax.apply(price)
yield chaining.update(price=price)
yield price
def _calculate(price,
product=None,
shipping_method=None,
payment_method=None,
bare=False,
**kwargs):
if bare or price is None or TAX in price:
return
tax_policy = settings_manager['tax_policy']
if tax_policy:
address_type = POLICY_CUSTOMER_ADDRESS_TYPES.get(tax_policy, None)
zone = AddressZone.get_current(address_type)
taxes = Tax.objects.spans(zone)
tax_rules = TaxRule.objects.none()
if product:
product_classes = ProductTaxClass.objects.for_product(product)
tax_rules = TaxRule.objects.filter(product_classes__in=product_classes)
elif shipping_method:
tax_rules = TaxRule.objects.filter(applies_to_shipping_costs=True)
elif payment_method:
tax_rules = TaxRule.objects.filter(applies_to_payment_costs=True)
if 'customer_group' in kwargs:
customer_group = kwargs['customer_group']
else:
CustomerGroup.current_customer_group()
tax_rules = tax_rules.filter(
Q(customer_groups=customer_group) | Q(customer_groups=None))
taxes = taxes.polymorphic().filter(tax_rules__in=tax_rules).distinct()
for tax in taxes:
price = tax.apply(price)
yield chaining.update(price=price)
yield price
