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AccountTax = self.env['account.tax']
for expense in self:
if not expense.company_id:
# This would be happening when emptying the required company_id field, triggering the "onchange"s.
# A traceback would occur because company_currency_id would be set to False.
# Instead of using the env company, recomputing the interface just to be blocked when trying to save
# we choose not to recompute anything and wait for a proper company to be inputted.
continue
if expense.is_multiple_currency:
base_line = expense._prepare_base_line_for_taxes_computation(
price_unit=expense.total_amount_currency * expense.currency_rate,
quantity=1.0,
currency_id=expense.company_currency_id,
rate=1.0,
)
AccountTax._add_tax_details_in_base_line(base_line, expense.company_id)
AccountTax._round_base_lines_tax_details([base_line], expense.company_id)
expense.total_amount = base_line['tax_details']['total_included_currency']
else: # Mono-currency case computation shortcut
expense.total_amount = expense.total_amount_currency
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