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Fix: Edge cases where rounding due to changed quantities in printing was altering the final amount in decimals, at times resulted in final rounding to change up or down.

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This commit is contained in:
Amritanshu Agrawal
2021-07-05 08:28:38 +05:30
parent 8c5d941850
commit c2483ae321
2 changed files with 26 additions and 7 deletions
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8
barker/barker/models/inventory.py
View File

@ -52,16 +52,24 @@ class Inventory(Base):
tax_id, tax_id,
tax_rate, tax_rate,
sort_order, sort_order,
product=None,
tax=None,
): ):
self.kot_id = kot_id self.kot_id = kot_id
if product_id is not None:
self.product_id = product_id self.product_id = product_id
self.quantity = quantity self.quantity = quantity
self.price = price self.price = price
self.discount = discount self.discount = discount
self.is_happy_hour = is_hh self.is_happy_hour = is_hh
if tax_id is not None:
self.tax_id = tax_id self.tax_id = tax_id
self.tax_rate = tax_rate self.tax_rate = tax_rate
self.sort_order = sort_order self.sort_order = sort_order
if product is not None:
self.product = product
if tax is not None:
self.tax = tax
@hybrid_property @hybrid_property
def effective_price(self): def effective_price(self):

21
barker/barker/printing/bill.py
View File

@ -45,9 +45,20 @@ def print_bill(voucher_id: uuid.UUID, db: Session):
) )
if key in items_dict: if key in items_dict:
items_dict[key].quantity += i.quantity items_dict[key].quantity += i.quantity
i.quantity = 0
else: else:
items_dict[key] = i items_dict[key] = Inventory(
None,
i.product_id,
i.quantity,
i.price,
i.discount,
i.is_happy_hour,
None,
i.tax_rate,
0,
i.product,
i.tax,
)
for i in [it for it in items_dict.values() if it.quantity != 0]: for i in [it for it in items_dict.values() if it.quantity != 0]:
get_tax_item(i.tax.id, i.tax.name, i.tax_amount, tax) get_tax_item(i.tax.id, i.tax.name, i.tax_amount, tax)
@ -132,14 +143,14 @@ def design_bill(
s += "\n\r" + "------------------------------------------" s += "\n\r" + "------------------------------------------"
# Totals # Totals
amount = sum(i.quantity * i.price for i in items) amount = sum(round(i.quantity * i.price, 2) for i in items)
s += f"\n\r{'Subtotal :': >32} {currency_format(amount): >9}" s += f"\n\r{'Subtotal :': >32} {currency_format(amount): >9}"
amount = sum(i.quantity * i.price for i in items if i.is_happy_hour) amount = sum(round(i.quantity * i.price, 2) for i in items if i.is_happy_hour)
if amount != 0: if amount != 0:
s += f"\n\r{'Happy Hour Discount :': >32} {currency_format(amount): >9}" s += f"\n\r{'Happy Hour Discount :': >32} {currency_format(amount): >9}"
amount = sum(i.quantity * i.effective_price * i.discount for i in items) amount = sum(round(i.quantity * i.effective_price * i.discount, 2) for i in items)
if amount != 0: if amount != 0:
s += f"\n\r{'Discount :': >32} {currency_format(amount): >9}" s += f"\n\r{'Discount :': >32} {currency_format(amount): >9}"