def _save_rows(self, purchase, receipt_dct, excl_vat=False):
"""
Save all saleitems in receipt_dct.
"""
store = purchase.pos.store
chain = store.chain
total_cost = 0
total_cost_excl_vat = 0
count_extra = settings.COUNT_EXTRA_AS_TWOSELL
for item in receipt_dct['items']:
if not item['id']:
item['id'] = get_twosell_positemid(title=item['title'])
positemid = item['id']
vat_rate = item['tax_rate']
price = calc_incl_vat(vat_rate, item['price']) if excl_vat else item['price']
quantity = item['quantity']
row_cost = price * quantity
row_discount, twosell_coupon_used, twosell_coupon_discount = self._handle_row_discounts(item, purchase, vat_rate, excl_vat)
modified = Product.objects.is_modified(positemid, item['title'])
# Product data
product, created = Product.objects.create_or_update(chain=chain,
articlenum=positemid, title=item['title'], vat_rate=vat_rate,
modified=modified
)
# Product in store data
product_in_store, created = ProductInStore.objects.create_or_update(
product=product, store=store, price=price, active=True
)
# Purchased product data
purchased_prod, created = PurchasedProduct.objects.get_or_create(
product=product, purchase=purchase, final=receipt_dct['final']
)
purchased_prod.n_items = quantity
purchased_prod.total_discount = row_discount
purchased_prod.total_cost = (row_cost - row_discount)
if twosell_coupon_used:
purchased_prod.twosell_coupon = row_cost - twosell_coupon_discount
purchased_prod.save()
total_cost += purchased_prod.total_cost
total_cost_excl_vat += purchased_prod.total_cost_excl_vat
try:
total_vat_rate = (total_cost - total_cost_excl_vat / total_cost_excl_vat)
except (InvalidOperation, ZeroDivisionError):
pass
else:
self._handle_gen_discount(purchase, receipt_dct, total_vat_rate, excl_vat)
return purchase
def _handle_row_discounts(self, dct_item, purchase, vat_rate, excl_vat=False):
row_discount = 0
twosell_coupon_discount = 0
twosell_coupon_used = False
for discount in dct_item.get('discounts', []):
twosell_id = discount.get('twosell_id', '')
amount = calc_incl_vat(vat_rate, discount['amount']) if excl_vat else discount['amount']
row_discount += amount
if Offer.objects.use_code(twosell_id, purchase):
twosell_coupon_used = True
twosell_coupon_discount += amount
return row_discount, twosell_coupon_used, twosell_coupon_discount
def _handle_gen_discount(self, purchase, receipt_dct, vat_rate, excl_vat):
if excl_vat:
purchase.gen_discount = calc_incl_vat(vat_rate, sum(receipt_dct.get('discounts', [])))
else:
purchase.gen_discount = sum(receipt_dct.get('discounts', []))