Hello All,

i want to use _create_invoices method  from

'sale_advance_payment_inv' class

in my new 'create_invoice_customer' that is inherrited by sales.order,so i have written the code but its not working it give an error like

NameError: global name 'sale_advance_payment_inv' is not defined

here is my code

from openerp import api, fields, models, _

class create_invoice_customer(models.Model):

_inherit="sale.order"

_description ="create invoice for customer"

@api.model

def create(self,vals):

res = super(sale_advance_payment_inv, self)

res._create_invoices

res=self.browse(cr, uid, ids[0], context=context)

return res

and my xml file

<openerp>

<data>

<record id="new_button_id" model="ir.ui.view">

<field name="name">new_logic.sale</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='partner_id']" position="after">

<field name="make1"/>

</xpath>

</field>

</record>

</data>

</openerp>

i have search many but still not getting proper answer please any one help me....