Hello all,

There's something I can't figure out, any help is appreciated. I think I don't understand the new concept 'environment' (env) in the V8 api very well.

Check_total allows to check for mismatches between computed total and invoice total in a purchase account.

Situation : While entering the purchase invoice, I would like to have the remaining amount automaticaly filled when inserting a new invoice_line, sort of inverse running total.

Browsing the code, I stumble upon :

account_invoice.py - class account_invoice_line:

@api.model
    def _default_price_unit(self):
        if not self._context.get('check_total'):
            return 0
        total = self._context['check_total']
        for l in self._context.get('invoice_line', []):

However, the context variables 'check_total' and 'invoice_line' don't seem to exist. Therefore,  _default_price_unit is always returns 0 (zero) instead of check_total minus running total.

Other behaviour I noticed:

1. I changed the account_invoice view as so the check_total value is passed to the invoice_line one2many control. The on_change methods on 'product' and 'uom' immediately overwrite the price_unit with 0, as for a new line the product isn't defined yet.
2. The VAT isn't calculated in the totals immediately, only when 'apply' is clicked. The code however hints towards other behaviour, see account_invoice.py class account_invoice, function _compute_amount

I have a fix for 1 and 2 (both wip), but I'm unable to retrieve or set the context 'invoice_line' (with_context, ...). I'm also unable to retrieve the current invoice lines when creating a new one (recordset is empty due to @api.model decorator, but removing this doesn't help : there's no link (yet?) with the (although existing, with dbase id) invoice).

What am I missing here?

Kind regards,

Ruben De Baets