partner_to = values.pop('partner_to', '')
if partner_to:
# placeholders could generate '', 3, 2 due to some empty field values
- tpl_partner_ids = [pid for pid in partner_to.split(',') if pid]
+ tpl_partner_ids = [int(pid) for pid in partner_to.split(',') if pid]
partner_ids += self.pool['res.partner'].exists(cr, SUPERUSER_ID, tpl_partner_ids, context=context)
results[res_id]['partner_ids'] = partner_ids
return results