序号生成算法odoo

def get_sum_seq(self, cr, uid, ids, name, args=None,  context=None):
    if not ids: return {}
    result={}
    for move_id in self.browse(cr,uid,ids,context=None):

        search_ids=self.
search(cr,uid,
[('picking_id','=',move_id.picking_id.id),
('cust_order_no','=',move_id.cust_order_no),
('id','<=',move_id.id)])
  result[move_id.id]=len(search_ids)



根据左边编号，按要求生成右边的形式的序号