Hi!

I want to add a calculated field in Partner class.

To do this, I've made a module with the code below.

I made it first without trying to called parent function from super python method.

But I had this error:

NameError. name '_get_invoice_partner'  is not defined

And now I have called them with super method, I have this error:

TypeError: super(type, obj): obj must be an instance or subtype of type

Is someone could help me please?

from openerp.osv import osv
from openerp.osv import orm
from openerp.osv import fields

class Partner(osv.osv):
    '''Partner'''
    _inherit = 'res.partner'

    def _get_invoice_partner(self, cr, uid, ids, context=None):
        res = super(Partner, self)._get_invoice_partner(cr, uid, ids, context=context)
        return res

    def _get_partner_id(self, cr, uid, ids, context=None):
        res = super(Partner, self)._get_partner_id(cr, uid, ids, context=context)
        return res

    def _get_last_mb_product(self, cr, uid, ids, name, args, context=None):
        """Return the last membership product buy by a user"""
        name=name[0]
        res ={}
        member_line_obj = self.pool.get('membership.membership_line')
        for partner in self.browse(cr, uid, ids, context=context):
            partner_id = partner.id
            line_id = member_line_obj.search(cr, uid, [
                ('partner', '=', partner_id),
                ('date_cancel', '=', False)
            ], limit=1, order='date_from', context=context)
            if line_id:
                res[partner.id] = {name: product_id} 
                product_id = member_line_obj.read(cr, uid, line_id[0], [name], context=context)[name][0]
 
        return res
 
    _columns = {
    'membership_id': fields.function(
        _get_last_mb_product, multi='membership_id',
        string='Last membership product',
        type='many2one',
        obj='product.product',
        store = {
            'account.invoice': (_get_invoice_partner, ['state'], 10),
            'membership.membership_line': (_get_partner_id, ['state'], 10, ) 
        }, help="Last membership product"),
    }
    
Partner()