What I need is to automatically write some quantities to a specific journal, read'em and write them on debit or credit fields, depending on the situation.

But, the whole point is, that I need to do this:

1.- Without creating invoices

2.- Depending on the state of class/table

3.- Without adding the function to any field, so as soon as it changes state, the quantites are written into the journal.

Ive tried this method, but I think this doesn't works because it should be on a computed Float or Integer field:

@api.multi
@api.depends('order_lines', 'order_lines.product_id', 'contract_work')
def accounting_scenarios(self):
    for record in self:
        if record.state == awaitingraw:
            record.product_id.printer_wip_account.debit = record.contract_work.total_
        elif record.state == work_in_progress:
            record.partner.transp_account.debit = record.contract_work.total_

So, it basically does nothing.

I need a behaviour like, when a purchase or sale is done, the debit or credit fieds are updated with the invoices generated. BUT in this case, the invoice isn't necessary, I just need to read, and copy some field (computed or not), and then "paste" this on the aforementioned fields of the selected journal.

I hope I've explained myself.

Any ideas?