def get_tax_constant_for_device(self, sellable):
"""
Returns a tax_constant for a device
Raises DeviceError if a constant is not found
@param sellable: sellable which has the tax codes
@type sellable: :class:`stoqlib.domain.sellable.Sellable`
@returns: the tax constant
@rtype: :class:`DeviceConstant`
"""
sellable_constant = sellable.get_tax_constant()
if sellable_constant is None:
raise DeviceError("No tax constant set for sellable %r" % sellable)
store = self.store
if sellable_constant.tax_type == TaxType.CUSTOM:
constant = DeviceConstant.get_custom_tax_constant(
self, sellable_constant.tax_value, store)
if constant is None:
raise DeviceError(_(
"fiscal printer is missing a constant for the custom "
"tax constant '%s'") % (sellable_constant.description, ))
else:
constant = DeviceConstant.get_tax_constant(
self, sellable_constant.tax_type, store)
if constant is None:
raise DeviceError(_(
"fiscal printer is missing a constant for tax "
"constant '%s'") % (sellable_constant.description, ))
return constant
def _validate_printer(self):
if self._printer is None:
raise DeviceError(
_("This operation requires a connected fiscal printer"))
if not self._printer_verified:
log.info('ecfui._validate_printer')
if not self._printer.check_serial():
raise DeviceError(
_("Fiscalprinters serial number is different!"))
self._printer_verified = True
def _validate_printer(self):
if self._printer is None:
raise DeviceError(
_("This operation requires a connected fiscal printer"))
# Check fiscal printer setup. If something went wrong with the setup,
# block the till
if not self._printer._driver.setup_complete():
raise DeviceError(_("An error occurred during fiscal printer setup"))
if not self._printer_verified:
log.info('ecfui._validate_printer')
if not self._printer.check_serial():
raise DeviceError(
_("Fiscalprinters serial number is different!"))
self._printer_verified = True
def _get_payment_method_constant(self, payment):
constant = self._printer.get_payment_constant(payment)
if not constant:
raise DeviceError(
_("The payment method used in this sale (%s) is not "
"configured in the fiscal printer.") % (payment.method.method_name, ))
return constant