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"""
We want the default odoo rate when the following change:
- the currency of the expense
- the total amount in foreign currency
- the date of the expense
this will cause the rate to be recomputed twice with possible changes but we don't have the required fields
to store the override state in stable
"""
date_today = fields.Date.context_today(self)
for expense in self:
if expense.is_multiple_currency:
if (
expense.currency_id != expense._origin.currency_id
or expense.total_amount_currency != expense._origin.total_amount_currency
or expense.date != expense._origin.date
):
expense.currency_rate = self.env['res.currency']._get_conversion_rate(
from_currency=expense.currency_id,
to_currency=expense.company_currency_id,
company=expense.company_id,
date=expense.date or date_today,
)
else:
expense.currency_rate = expense.total_amount / expense.total_amount_currency if expense.total_amount_currency else 1.0
else: # Mono-currency case computation shortcut, no need for the label if there is no conversion
expense.currency_rate = 1.0
expense.label_currency_rate = False
continue
expense.label_currency_rate = _(
'1 %(exp_cur)s = %(rate)s %(comp_cur)s',
exp_cur=expense.currency_id.name,
rate=float_repr(expense.currency_rate, 6),
comp_cur=expense.company_currency_id.name,
)
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