Question

i dont know if i should be asking this here (im now thinking maybe a moderator would move it to stackoverflow), but im not getting an answer on the openerp or launchpad forums.
In OpenERP 6.0.1, the following function does what its supposed to do when a button is placed in the invoice form to execute it:

class account_invoice(osv.osv):
    _inherit = "account.invoice"

    """ Function to update all lines on invoice """
    def update_invoice(self, cr, uid, ids, context=None):
        if context is None:
            context = {}
        line_obj = self.pool.get('account.invoice.line')
        invoice_ids = self.browse(cr, uid, ids, context)
        for invoice in invoice_ids:
            for line in invoice.invoice_line:
                if line.product_id:
                    res = line_obj.product_id_change(cr, uid, [line.id], (line.product_id and line.product_id.id or False), uom=(line.uos_id and line.uos_id.id or False), qty=(line.quantity or 0),
                name=(line.name or ''), type=(invoice.type or False), partner_id=invoice.partner_id.id, fposition_id=invoice.fiscal_position.id, price_unit=(line.price_unit or 0),
                address_invoice_id=(invoice.address_invoice_id and invoice.address_invoice_id.id or False), currency_id=(invoice.currency_id and invoice.currency_id.id or False), context=context)
                    price_unit = res['value']['price_unit']
                    discount = res['value']['discount']
                    line_obj.write(cr, uid, [line.id], {'price_unit': price_unit})
                    line_obj.write(cr, uid, [line.id], {'discount': discount})
        return True

    account_invoice()

this is to say that the invoice lines’ price unit and discount are updated when this button is clicked in the form.

im trying to create a server action for object “Invoice” of type “python code” that executes this function on all invoices from a menu item. in the python code box, i wrote:

inv = self.pool.get('account.invoice')
line_obj = self.pool.get('account.invoice.line')
for invoice in inv.browse(cr, uid, ids):
    for line in invoice.invoice_line:
        res = line_obj.product_id_change(cr, uid, [line.id], (line.product_id and line.product_id.id or False), uom=(line.uos_id and line.uos_id.id or False), qty=(line.quantity or 0), name=(line.name or ''), type=(invoice.type or False), partner_id=invoice.partner_id.id, fposition_id=invoice.fiscal_position.id, price_unit=(line.price_unit or 0), address_invoice_id=(invoice.address_invoice_id and invoice.address_invoice_id.id or False), currency_id=(invoice.currency_id and invoice.currency_id.id or False), context=context)
    price_unit = res['value']['price_unit']
    discount = res['value']['discount']
    line_obj.write(cr, uid, [line.id], {'price_unit': price_unit})
    line_obj.write(cr, uid, [line.id], {'discount': discount})

but it does not work. what am i doing wrong?

EDIT:
can anyone help me write a function that updates all invoices’ lines’ similar to those in /account/wizard/account_invoice_state.py ?

Answer 1

i managed to successfully write what i need, here it is:

class account_invoice_update(osv.osv_memory):

_name = "account.invoice.update"

""" Function to update all lines on selected invoice(s) """
def invoice_update(self, cr, uid, ids, context=None):
    if context is None:
        context = {}

    pool_obj = pooler.get_pool(cr.dbname)
    data_inv = pool_obj.get('account.invoice').read(cr, uid, context['active_ids'], ['state'], context=context)

    for record in data_inv:
        if record['state'] in ('cancel','paid','open'):
            raise osv.except_osv(_('Warning'), _("Selected Invoice(s) cannot be cancelled as they are already in 'Cancelled','Done', or 'Open' state!"))

    inv_obj = self.pool.get('account.invoice')
    inv_line_obj = self.pool.get('account.invoice.line')
    for invoice in inv_obj.browse(cr, uid, context.get('active_ids'), context=context):
        for line in invoice.invoice_line:
            res = inv_line_obj.product_id_change(cr, uid, [line.id], (line.product_id and line.product_id.id or False), uom=(line.uos_id and line.uos_id.id or False), qty=(line.quantity or 0), name=(line.name or ''), type=(invoice.type or False), partner_id=invoice.partner_id.id, fposition_id=invoice.fiscal_position.id, price_unit=(line.price_unit or 0), address_invoice_id=(invoice.address_invoice_id and invoice.address_invoice_id.id or False), currency_id=(invoice.currency_id and invoice.currency_id.id or False), context=context)
            price_unit = res['value']['price_unit']
            discount = res['value']['discount']
            inv_line_obj.write(cr, uid, [line.id], {'price_unit': price_unit})
            inv_line_obj.write(cr, uid, [line.id], {'discount': discount})

    return {'type': 'ir.actions.act_window_close'}

account_invoice_update()