I try to create filed related with account.invoice.mount_total, and when I do that I get error
My example:
class PlayInvoice(models.Model):
_name = 'play.invoice'
invoice_id = fields.Many2one('account.invoice', 'Invoice')
amount_total_invoice = fields.Monetary(string='Total', related='invoice_id.amount_total')
Error:
Traceback (most recent call last):
return self._fields[key].__get__(self, type(self))
KeyError: 'currency_id'
Try searching for monetary fields in this forum