Hello.

Q1 and Q3: you have to inherit sale order line and invoice line.

You have to do something like this:

class custom_sale_order_line(osv.osv)
_inherit='sale.order.line'

def product_id_change(self, cr, uid, ids, pricelist, product, qty=0,
        uom=False, qty_uos=0, uos=False, name='', partner_id=False,
        lang=False, update_tax=True, date_order=False, packaging=False,
        fiscal_position=False, flag=False, context=None):



    res=super(sale_order_line, self).product_id_change(cr, uid, ids, pricelist, product, qty,
        uom, qty_uos, uos, name, partner_id,
        lang, update_tax, date_order, packaging=packaging, fiscal_position=fiscal_position, flag=flag, context=context)

    res['value']['custom_field']=#assign some value to be displayed 

    return res

Invoice lines object has a onchange_product too. So you have to do this to pull the field.

And Q2: add 'account' on __openerp__.py to depends

Try this:

class sale_order_line(osv.osv):    
    _inherit = 'sale.order.line'
    _columns = {
                'zCodeFiveSol': fields.many2one('product.product', 'zCodeFiveSol'),
                'zBaumCode': fields.many2one('product.product', 'zBaumCode'),
                }    
    def product_id_change(self, cr, uid, ids, pricelist, product, qty=0,
            uom=False, qty_uos=0, uos=False, name='', partner_id=False,
            lang=False, update_tax=True, date_order=False, packaging=False, fiscal_position=False, flag=False, context=None):
        res=super(sale_order_line, self).product_id_change(cr, uid, ids, pricelist, product, qty,
        uom, qty_uos, uos, name, partner_id, lang, update_tax, date_order, packaging=packaging, 
        fiscal_position=fiscal_position, flag=flag, context=context)
        res['value']['zCodeFiveSol'] = "1234555"     
        res['value']['zBaumCode'] = "6789"  
        return res

sale_order_line()

Hello,

You have following lines:

class zsale_order_line(osv.osv):
   "Custome code"
sale_order_line()

Either change sale_order_line() to zsale_order_line() or remove sale_order_line() line.

After solve both issues, one issue remaining related to "zinvoice_form" form view, Here : In Py File: * you have inherit account.invoice.line and add new fields.

In xml File: * You have created view for account.invoice and try to add new field which u have mention in account.invoice.line class, so you have to need to inherit account.invoice.line form view to add these fields instead of account.invoie form view.

Make sure there is no zip file in the addons you are using. I suspect thats the issue when you say your code does not get executed and it throws the same error.

In either case, replace sale_order_line by another name and use it in super.

Thanks.

Hello,

Finally sovled the problem thanks to your help. The fields work properly. Pasting here the code in case someone needs it. Works properly on my OpenERP version 8.0alpha1 . In case this is not the best way to write the code, please feel free to comment. Thanks once again for your help!

I'm not allowed to mark my reply as solution, so I guess it'll stay at the end of the page... sorry for that!

Regards, Pavel Pavlov

z_fivesol_sale.py

from openerp import tools
from openerp.osv import fields, osv
from openerp.tools.translate import _
#Import the logger for debug code
import logging
_logger = logging.getLogger(__name__)

#iherit sale.order.line and extend it with the required fields
class sale_order_line(osv.osv):    
    _inherit = 'sale.order.line'
    _columns = {
                'zCodeFiveSol': fields.char('zCodeFiveSol', size=20, required=True, readonly=True, states={'draft': [('readonly', False)]}),
                'zBaumCode': fields.char('zBaumCode', size=20, required=True, readonly=True, states={'draft': [('readonly', False)]})
                }   
    #iherit sale.order.line->product_id_change 
    def product_id_change(self, cr, uid, ids, pricelist, product, qty=0,
            uom=False, qty_uos=0, uos=False, name='', partner_id=False,
            lang=False, update_tax=True, date_order=False, packaging=False, fiscal_position=False, flag=False, context=None):
        #first call super and fill the res array, then process the additioanl fields.   
        res=super(sale_order_line, self).product_id_change(cr, uid, ids, pricelist, product, qty,
        uom, qty_uos, uos, name, partner_id, lang, update_tax, date_order, packaging=packaging, 
        fiscal_position=fiscal_position, flag=flag, context=context)        

        #Will need to get the data from the product.product model to fill up the initial values for my fields.
        context_partner = {'lang': lang, 'partner_id': partner_id}
        product_obj = self.pool.get('product.product')
        product_obj = product_obj.browse(cr, uid, product, context=context_partner)
        #if product is already selected, then assign the additional fields, else don't do anything.
        if product_obj.id:
            fscode = self.pool.get('product.product').zCodeFiveSol_get(cr, uid, [product_obj.id], context=context_partner)[0][1]
            res['value']['zCodeFiveSol'] = fscode
            fscode = self.pool.get('product.product').zBaumCode_get(cr, uid, [product_obj.id], context=context_partner)[0][1]
            res['value']['zBaumCode'] = fscode  
            _logger.debug("Successfully set res['value']['zCodeFiveSol'] to %r and res['value']['zCodeFiveSol'] to %r", res['value']['zCodeFiveSol'], res['value']['zBaumCode'])
        return res

sale_order_line()

z_fivesol_sale_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="zview_order_form" model="ir.ui.view">
            <field name="name">sale.order.form.inherited</field>
            <field name="model">sale.order</field>
            <field name="inherit_id" ref="sale.view_order_form"/>            
            <field name="arch" type="xml">
                <xpath expr="//field[@name='order_line']/tree/field[@name='name']" position="replace">
                    <field name="zCodeFiveSol"/>
                </xpath>         
                <xpath expr="//field[@name='order_line']/form/group/group/field[@name='price_unit']" position="after">
                    <field name="zCodeFiveSol"/>
                    <field name="zBaumCode"/>
                </xpath>                          
            </field>
        </record>            
    </data>
</openerp>