<filter string="库龄超30天" name="stock_warn" domain="[('location_id.usage','=', 'internal'), ('in_date', '<', (context_today() - relativedelta(days=30)).strftime('%Y-%m-%d 00:00:00') ) ]"/>

 def stock_quant_over30(dd):
  action = self.pool['ir.model.data'].xmlid_to_object(cr, uid, 'stock.quantsact')
  d = datetime.datetime.now() - datetime.timedelta(days = dd)
  res = { 'name': action.name,
  'type': action.type,
  'target': action.target,
  'view_mode': action.view_mode,
  'view_type': action.view_type,
  'domain': [('in_date', '<', d.strftime("%Y-%m-%d %H:%M:%S"))],
  'context': context,
  'res_model': action.res_model,
  }
  return res
 action = stock_quant_over30(30)