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Add a maximum budget to vouchers (#1526)

Browse Source 
* Data model changes

* Fix test failures

* Adjustments

* Some tests and API support

* Check when extending orders

* Make things more deterministic, fix style

* Do not apply negative discounts

* Update price_before_voucher on item/subevent changes

* Add tests for price_before_voucher in combination with free price

* Fix InvoiceAddress.DoesNotExist
This commit is contained in:
Raphael Michel
2020-01-03 16:15:17 +01:00
committed by GitHub
parent b738e3bd9d
commit 8e2821b398
20 changed files with 649 additions and 23 deletions
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28
src/pretix/base/services/cart.py
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@@ -108,11 +108,12 @@ error_messages = {
class CartManager:
AddOperation = namedtuple('AddOperation', ('count', 'item', 'variation', 'price', 'voucher', 'quotas',
'addon_to', 'subevent', 'includes_tax', 'bundled', 'seat'))
'addon_to', 'subevent', 'includes_tax', 'bundled', 'seat',
'price_before_voucher'))
RemoveOperation = namedtuple('RemoveOperation', ('position',))
VoucherOperation = namedtuple('VoucherOperation', ('position', 'voucher', 'price'))
ExtendOperation = namedtuple('ExtendOperation', ('position', 'count', 'item', 'variation', 'price', 'voucher',
'quotas', 'subevent', 'seat'))
'quotas', 'subevent', 'seat', 'price_before_voucher'))
order = {
RemoveOperation: 10,
VoucherOperation: 15,
@@ -384,6 +385,7 @@ class CartManager:
else:
price = self._get_price(cp.item, cp.variation, cp.voucher, price, cp.subevent,
force_custom_price=True)
pbv = TAXED_ZERO
else:
bundled_sum = Decimal('0.00')
if not cp.addon_to_id:
@@ -396,9 +398,14 @@ class CartManager:
price = self._get_price(cp.item, cp.variation, cp.voucher, cp.price, cp.subevent,
cp_is_net=True, bundled_sum=bundled_sum)
price = TaxedPrice(net=price.net, gross=price.net, rate=0, tax=0, name='')
pbv = self._get_price(cp.item, cp.variation, None, cp.price, cp.subevent,
cp_is_net=True, bundled_sum=bundled_sum)
pbv = TaxedPrice(net=pbv.net, gross=pbv.net, rate=0, tax=0, name='')
else:
price = self._get_price(cp.item, cp.variation, cp.voucher, cp.price, cp.subevent,
bundled_sum=bundled_sum)
pbv = self._get_price(cp.item, cp.variation, None, cp.price, cp.subevent,
bundled_sum=bundled_sum)
quotas = list(cp.quotas)
if not quotas:
@@ -414,7 +421,7 @@ class CartManager:
op = self.ExtendOperation(
position=cp, item=cp.item, variation=cp.variation, voucher=cp.voucher, count=1,
price=price, quotas=quotas, subevent=cp.subevent, seat=cp.seat
price=price, quotas=quotas, subevent=cp.subevent, seat=cp.seat, price_before_voucher=pbv
)
self._check_item_constraints(op)
@@ -569,16 +576,18 @@ class CartManager:
bop = self.AddOperation(
count=bundle.count, item=bitem, variation=bvar, price=bprice,
voucher=None, quotas=bundle_quotas, addon_to='FAKE', subevent=subevent,
includes_tax=bool(bprice.rate), bundled=[], seat=None
includes_tax=bool(bprice.rate), bundled=[], seat=None, price_before_voucher=bprice,
)
self._check_item_constraints(bop, operations)
bundled.append(bop)
price = self._get_price(item, variation, voucher, i.get('price'), subevent, bundled_sum=bundled_sum)
pbv = self._get_price(item, variation, None, i.get('price'), subevent, bundled_sum=bundled_sum)
op = self.AddOperation(
count=i['count'], item=item, variation=variation, price=price, voucher=voucher, quotas=quotas,
addon_to=False, subevent=subevent, includes_tax=bool(price.rate), bundled=bundled, seat=seat
addon_to=False, subevent=subevent, includes_tax=bool(price.rate), bundled=bundled, seat=seat,
price_before_voucher=pbv
)
self._check_item_constraints(op, operations)
operations.append(op)
@@ -684,7 +693,8 @@ class CartManager:
op = self.AddOperation(
count=1, item=item, variation=variation, price=price, voucher=None, quotas=quotas,
addon_to=cp, subevent=cp.subevent, includes_tax=bool(price.rate), bundled=[], seat=None
addon_to=cp, subevent=cp.subevent, includes_tax=bool(price.rate), bundled=[], seat=None,
price_before_voucher=None
)
self._check_item_constraints(op, operations)
operations.append(op)
@@ -898,7 +908,8 @@ class CartManager:
event=self.event, item=op.item, variation=op.variation,
price=op.price.gross, expires=self._expiry, cart_id=self.cart_id,
voucher=op.voucher, addon_to=op.addon_to if op.addon_to else None,
subevent=op.subevent, includes_tax=op.includes_tax, seat=op.seat
subevent=op.subevent, includes_tax=op.includes_tax, seat=op.seat,
price_before_voucher=op.price_before_voucher.gross if op.price_before_voucher is not None else None
)
if self.event.settings.attendee_names_asked:
scheme = PERSON_NAME_SCHEMES.get(self.event.settings.name_scheme)
@@ -945,6 +956,8 @@ class CartManager:
elif available_count == 1:
op.position.expires = self._expiry
op.position.price = op.price.gross
if op.price_before_voucher is not None:
op.position.price_before_voucher = op.price_before_voucher.gross
try:
op.position.save(force_update=True)
except DatabaseError:
@@ -964,6 +977,7 @@ class CartManager:
# be expected
continue
op.position.price_before_voucher = op.position.price
op.position.price = op.price.gross
op.position.voucher = op.voucher
op.position.save()