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Cross selling (#4185)

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Product categories can now be marked as "cross-selling categories", causing them to 
appear in the add-on checkout step as additional recommendations, depending on 
their cross-selling visibility (always, only if certain products are already in the cart, or 
only if they qualify for a discount according to discount rules).

---------

Co-authored-by: Raphael Michel <michel@rami.io>
Co-authored-by: Richard Schreiber <schreiber@rami.io>
This commit is contained in:
Mira
2024-10-14 14:39:49 +02:00
committed by GitHub
parent 7607cc5d2f
commit 359df1f51e
24 changed files with 1737 additions and 218 deletions
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20
src/pretix/base/services/pricing.py
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@@ -20,8 +20,9 @@
# <https://www.gnu.org/licenses/>.
#
import re
from collections import defaultdict
from decimal import Decimal
from typing import List, Optional, Tuple
from typing import List, Optional, Tuple, Union
from django import forms
from django.db.models import Q
@@ -31,6 +32,7 @@ from pretix.base.models import (
AbstractPosition, InvoiceAddress, Item, ItemAddOn, ItemVariation,
SalesChannel, Voucher,
)
from pretix.base.models.discount import Discount, PositionInfo
from pretix.base.models.event import Event, SubEvent
from pretix.base.models.tax import TAXED_ZERO, TaxedPrice, TaxRule
from pretix.base.timemachine import time_machine_now
@@ -155,14 +157,22 @@ def get_line_price(price_after_voucher: Decimal, custom_price_input: Decimal, cu
return price
def apply_discounts(event: Event, sales_channel: str,
positions: List[Tuple[int, Optional[int], Decimal, bool, bool]]) -> List[Decimal]:
def apply_discounts(event: Event, sales_channel: Union[str, SalesChannel],
positions: List[Tuple[int, Optional[int], Decimal, bool, bool, Decimal]],
collect_potential_discounts: Optional[defaultdict]=None) -> List[Tuple[Decimal, Optional[Discount]]]:
"""
Applies any dynamic discounts to a cart
:param event: Event the cart belongs to
:param sales_channel: Sales channel the cart was created with
:param positions: Tuple of the form ``(item_id, subevent_id, line_price_gross, is_addon_to, is_bundled, voucher_discount)``
:param collect_potential_discounts: If a `defaultdict(list)` is supplied, all discounts that could be applied to the cart
based on the "consumed" items, but lack matching "benefitting" items will be collected therein.
The dict will contain a mapping from index in the `positions` list of the item that could be consumed, to a list
of tuples describing the discounts that could be applied in the form `(discount, max_count, grouping_id)`.
`max_count` is either the maximum number of benefitting items that the discount would apply to, or `inf` if that number
is not limited. The `grouping_id` can be used to distinguish several occurrences of the same discount.
:return: A list of ``(new_gross_price, discount)`` tuples in the same order as the input
"""
if isinstance(sales_channel, SalesChannel):
@@ -177,10 +187,10 @@ def apply_discounts(event: Event, sales_channel: str,
).prefetch_related('condition_limit_products', 'benefit_limit_products').order_by('position', 'pk')
for discount in discount_qs:
result = discount.apply({
idx: (item_id, subevent_id, line_price_gross, is_addon_to, voucher_discount)
idx: PositionInfo(item_id, subevent_id, line_price_gross, is_addon_to, voucher_discount)
for idx, (item_id, subevent_id, line_price_gross, is_addon_to, is_bundled, voucher_discount) in enumerate(positions)
if not is_bundled and idx not in new_prices
})
}, collect_potential_discounts)
for k in result.keys():
result[k] = (result[k], discount)
new_prices.update(result)