def convert_price(price, currency, decimal_places=4):
""" Convert price field, returns Money field """
price_adjusted = None
# Get default currency from settings
default_currency = InvenTreeSetting.get_setting(
'INVENTREE_DEFAULT_CURRENCY')
if price:
if currency and default_currency:
try:
# Get adjusted price
price_adjusted = convert_money(Money(price, currency),
default_currency)
except MissingRate:
# No conversion rate set
price_adjusted = Money(price, currency)
else:
# Currency exists
if currency:
price_adjusted = Money(price, currency)
# Default currency exists
if default_currency:
price_adjusted = Money(price, default_currency)
if price_adjusted and decimal_places:
price_adjusted.decimal_places = decimal_places
return price_adjusted
def get_total_price(self, target_currency=currency_code_default()):
"""
Calculates the total price of all order lines, and converts to the specified target currency.
If not specified, the default system currency is used.
If currency conversion fails (e.g. there are no valid conversion rates),
then we simply return zero, rather than attempting some other calculation.
"""
total = Money(0, target_currency)
# gather name reference
price_ref_tag = 'sale_price' if isinstance(
self, SalesOrder) else 'purchase_price'
# order items
for line in self.lines.all():
price_ref = getattr(line, price_ref_tag)
if not price_ref:
continue
try:
total += line.quantity * convert_money(price_ref,
target_currency)
except MissingRate:
# Record the error, try to press on
kind, info, data = sys.exc_info()
Error.objects.create(
kind=kind.__name__,
info=info,
data='\n'.join(traceback.format_exception(
kind, info, data)),
path='order.get_total_price',
)
logger.error(f"Missing exchange rate for '{target_currency}'")
# Return None to indicate the calculated price is invalid
return None
# extra items
for line in self.extra_lines.all():
if not line.price:
continue
try:
total += line.quantity * convert_money(line.price,
target_currency)
except MissingRate:
# Record the error, try to press on
kind, info, data = sys.exc_info()
Error.objects.create(
kind=kind.__name__,
info=info,
data='\n'.join(traceback.format_exception(
kind, info, data)),
path='order.get_total_price',
)
logger.error(f"Missing exchange rate for '{target_currency}'")
# Return None to indicate the calculated price is invalid
return None
# set decimal-places
total.decimal_places = 4
return total
