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Bill Ennals

I'm looking for some help with the code for the following requirement.  This is for V11 CE.

In Vendor Bill (account.invoice) I have added a custom selection field named "coordinator_approval".  The selection options are 'Not yet approved' and 'Approved'.  The reason I have this field is so that a team member can approve an invoice BEFORE the accounting person validates it and permanently places it in the system.

Currently I have the default value for the field set to 'Not yet approved'.

What I would like is to make the default value  'Approved' IF the Vendor Bill is created from a Purchase Order, in which case the field: 'origin' (Source Doucment) would have a value in it taken from the source Purchase Order.

To summarise, the logic would be something like this:

On creation of a new Vendor Bill,

    if field:'origin' = True,

        then set field:'coordinator_approval' to 'Approved,

        otherwise set field:'coordinator_approval' to 'Not yet approved' BUT allow the field to be manually changed by a user to 'Approved' even if the field:'origin' = False.


Apologies for my homespun logic format above, but can anyone help me with how to achieve this?  Some combination of determining a default value within a computed field perhaps?

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Falguni Tank
Best Answer

Hello  Bill Ennals,
You can do this using api .

Please consider the following , you will get better idea.
Here, first define api  and write the procedure inside  that ....
    @api.model
    def _get_advance_payment_method(self):
        if self._count() == 1:

            sale_obj = self.env['sale.order']
            order = sale_obj.browse(self._context.get('active_ids'))[0]

            if all([line.product_id.invoice_policy == 'order' for line in order.order_line]) or order.invoice_count:
                return 'percentage'
        return 'delivered'
And now define the selection field , give the default value  as described below...

 advance_payment_method = fields.Selection([
        ('A', 'a'),
        ('B', 'b'),
        ], string='What do you want to invoice?', default=_get_advance_payment_method, required=True)

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