我有一个需要使用循环插入多次的对象。每次循环迭代我都会更改一些字段值。我的代码是:
@view_config(route_name="be.bautocredits.rates.add",
request_method="POST",
permission="admin",
renderer="json")
def _add_rates(self):
_ = self.request.translate
controls = self.request.POST.items()
schema = AutocreditRateSchema()
try:
schema.deserialize(controls)
rate = AutocreditRate()
rate.autocredit = Autocredit.by_rid(self.request.POST.get('_autocredits_rid'))
rate.carshow = Carshow.by_rid(self.request.POST.get('_carshows_rid'))
rate.currency = Currency.by_rid(self.request.POST.get('_currencies_rid'))
rate.min_cost_currency = Currency.by_rid(self.request.POST.get('min_cost_currencies_rid'))
rate.max_cost_currency = Currency.by_rid(self.request.POST.get('max_cost_currencies_rid'))
rate.min_currency = Currency.by_rid(self.request.POST.get('min_currencies_rid'))
rate.max_currency = Currency.by_rid(self.request.POST.get('max_currencies_rid'))
rate.manufacturer = Manufacturer.by_rid(self.request.POST.get('_manufacturers_rid'))
rate.autocredit.updated = datetime.datetime.now()
_cars_rids = list(set(self.request.POST.getall('_cars_rid')))
if _cars_rids:
for _cars_rid in _cars_rids:
rate.car = Car.by_rid(_cars_rid)
DBSession.add(rate)
else:
DBSession.add(rate)
except colander.Invalid, e:
return dict(errors=dict(e.asdict().items()+dict(status_bar=_(u'Check errors')).items()))
return dict()
此代码仅插入单行。由于某些原因,我不能直接在“try block”开始设置循环。我做错了什么?