def variation_choice(cls, variation, attributes=None, **kwargs):
result = (yield chaining.forward).result
if result is not None:
return
variant = variation.variant.downcast()
price_adjustment = None
if variant.is_variant:
a = Price.calculate(product=variant, raw=True)
b = Price.calculate(product=variant.product, raw=True)
price_adjustment = Price(0)
if a is not None and b is not None:
price_adjustment = (a - b)
values = variation.values.all().order_by('attribute')
if attributes is not None:
values = values.filter(attribute__in=attributes)
values = VARIATION_VALUE_SEPERATOR.join(
[unicode(value) for value in values]
)
yield call_or_format(
VARIATION_CHOICE_FORMAT,
variation=variation,
variant=variant,
values=values,
price_adjustment=price_adjustment
)
def variation_choice(cls, variation, attributes=None, **kwargs):
result = (yield chaining.forward).result
if result is not None:
return
variant = variation.variant.downcast()
price_adjustment = None
if variant.is_variant:
a = Price.calculate(product=variant, raw=True)
b = Price.calculate(product=variant.product, raw=True)
price_adjustment = Price(0)
if a is not None and b is not None:
price_adjustment = (a - b)
values = variation.values.all().order_by('attribute')
if attributes is not None:
values = values.filter(attribute__in=attributes)
values = VARIATION_VALUE_SEPERATOR.join(
[unicode(value) for value in values])
yield call_or_format(VARIATION_CHOICE_FORMAT,
variation=variation,
variant=variant,
values=values,
price_adjustment=price_adjustment)
def apply(self, price):
tax_inclusive = settings_manager['tax_inclusive']
# Now we can create the tax
tax_amount = self.amount
tax = Price(tax_amount, currency=price.currency, component=self)
# Apply tax
price += tax
# Handle tax inclusive
if tax_inclusive:
price -= Price(tax_amount, currency=price.currency)
return price
def apply(self, price):
discount_amount = self.amount
# Now we can create the discount
discount = Price(discount_amount,
currency=price.currency,
component=self)
# Apply discount
price -= discount
return price
def apply(self, price):
# First we get the base amount
# to apply the rate against.
base_amount = price.amount
# Now we can create the discount
discount_amount = base_amount * self.rate
discount = Price(discount_amount,
currency=price.currency,
component=self)
# Apply discount
price -= discount
return price
def calculate(self):
unit_price = Price.calculate(
qty=self.qty,
**self.get_unit_price_kwargs()
)
total = None
if unit_price is not None:
total = Price.calculate.with_result(self.qty * unit_price)(
purchase=self,
**self.get_total_kwargs()
)
recalculated = unit_price != self.unit_price or total != self.total
self.unit_price = unit_price
self.total = total
self.calculated = timezone.now()
return recalculated
def calculate(self):
subtotal = Price(0)
recalculated = False
for purchase in self:
if purchase.needs_calculation():
recalculated |= purchase.calculate()
if purchase.total is not None:
subtotal += purchase.total
if recalculated:
self._mutate_purchases()
total = Price.calculate.with_result(subtotal)(cart=self)
recalculated |= subtotal != self.subtotal or total != self.total
self.subtotal = subtotal
self.total = total
self.calculated = timezone.now()
return recalculated
def get_price(self, document, prefix, currency, **kwargs):
return Price.calculate(product=document, currency=currency, **kwargs)
def test_addition(self):
self.assertEqual(Price(100) + Price(100), Price(200))
self.assertEqual((Price(50) + Price(10, component=A) + Price(50))[A],
Price(10, component=A))
def test_not_equal(self):
self.assertNotEqual(Price(100), Price(200))
self.assertNotEqual(Price(10, component=A), Price(10, component=B))
def test_equal(self):
self.assertEqual(Price(100), Price(100))
self.assertEqual(Price(10, component=A), Price(10, component=A))
def test_init(self):
self.assertEqual(Price(100).amount, 100)
self.assertEqual(Price(100.5).amount, 100.5)
self.assertEqual(Price('100.513').amount, Decimal('100.513'))
self.assertEqual(Price(10, component=A).amount, 10)
def get_base_costs(self, order):
return Price(0)