Hi,

I made some customization to OpenErp to when in Purchase Orders(PO) if I choose a Sale Order (SO) the Purchase Order Lines will get the information from Sales Order Lines. My code:

mymodule.py

class purchase_order(osv.osv):
    _columns = {
       'asd_pquotation_id': fields.many2one('sale.order','Sale Quotation', domain=[('state','in',('draft','sent'))]),
    }
    _defaults = {
        'state': 'draft',
        'asd_pquotation_id': lambda self, cr, uid, context: context.get('asd_pquotation_id', False),
    }
    def onchange_sales_order(self, cr, uid, ids, asd_pquotation_id, partner_id, pricelist_id):
        domain = []
        value = []
        if asd_pquotation_id:
            so = self.pool.get('sale.order').browse(cr,uid,asd_pquotation_id)
            for sol in so.order_line:
                vals = self.pool.get('purchase.order.line').onchange_product_id(cr, uid, ids, pricelist_id, sol.product_id.id, sol.product_uom_qty, sol.product_uom.id, partner_id)
                vals['value'].update({
                    'product_id': sol.product_id.id,
                    'state':'draft',
                    'move_ids':[],
                    'invoiced':0,
                    'invoice_lines':[]
                    })
                value.append(vals['value'])
                domain.append(vals['domain']) 
        return {'value': {'order_line': value}, 'domain': {'order_line': domain}}
purchase_order()

class sale_order(osv.osv):
    _inherit = "sale.order"
    _name = "sale.order"
    _columns = {
        'vi_contact_by': fields.selection([ ('by1','Email'), ('by2','Fax'), ('by3','Phone'), ('by4','Meeting'), ], 'Contacted by'),
        'asd_squotation': fields.one2many('purchase.order','asd_pquotation_id', 'Purchase Quotation'),
    }
sale_order()

mymoule_view.xml

   <record id="purchase_order_form_change" model="ir.ui.view">
        <field name="name">purchase.order.form.change</field>
        <field name="model">purchase.order</field>
        <field name="inherit_id" ref="purchase.purchase_order_form"/>
        <field name="arch" type="xml">
        <xpath expr="/form/sheet/group/group/field[@name='company_id']" position="after">
            <field name="asd_pquotation_id" on_change="onchange_sales_order(asd_pquotation_id,partner_id,pricelist_id)"/>
        </xpath>
        </field>
    </record>

Everything was working until I check the checkbox in Settins-> Purchases the box from:

Alerts by products or supplier

So if I check this, when I try to choose a SO in the form of PO I get this error:

2013-04-15 17:11:06,423 13876 ERROR nova2 openerp.osv.osv: Uncaught exception
Traceback (most recent call last):
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 123, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 179, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 166, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/opt/openerp-7.0/openerp/addons/infinitechoices/infinitechoices.py", line 74, in onchange_sales_order
    domain.append(vals['domain'])
KeyError: 'domain'
2013-04-15 17:11:06,424 13876 ERROR nova2 openerp.netsvc: domain
Traceback (most recent call last):
  File "/opt/openerp-7.0/openerp/netsvc.py", line 289, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/opt/openerp-7.0/openerp/service/web_services.py", line 614, in dispatch
    res = fn(db, uid, *params)
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 169, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 123, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 179, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/opt/openerp-7.0/openerp/osv/osv.py", line 166, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/opt/openerp-7.0/openerp/addons/infinitechoices/infinitechoices.py", line 74, in onchange_sales_order
    domain.append(vals['domain'])
KeyError: 'domain'

Someone know how to fix this? Thanks