我有一个奇怪的问题。我正在使用与从Model返回的数据绑定的Select字段。它被定义为：
choices = Subscription.objects.filter(is_full_version=False)
subscription_id = forms.ModelChoiceField(queryset=choices)
request.POST会从id选项的value属性返回form.cleaned_data.get('subscription_id')但是当我打电话时：
'subscription_id': <Subscription: Gold>它会返回：
Gold
request.POST是文字而非Id。
subscription_id': [u'3']宁愿返回我想要的东西：
public class APInvoiceEntryExt:PXGraphExtension<APInvoiceEntry>
{
public PXAction<APInvoice> LaunchOpenSource;
[PXButton(CommitChanges = true)]
[PXUIField(DisplayName = "Open Source")]
protected void launchOpenSource()
{
APInvoice apinvoice = (APInvoice)Base.Document.Current;
if (apinvoice != null)
{
AssistantController.OpenSourceDataMaint graph = PXGraph.CreateInstance<AssistantController.OpenSourceDataMaint>();
graph.OpenSourceDataHeader.Current = graph.OpenSourceDataHeader.Search<AssistantController.xTACOpenSourceHeader.openSourceName
,AssistantController.xTACOpenSourceHeader.dataID>("Bills and Adjustments", apinvoice.RefNbr);
throw new PXRedirectRequiredException(graph, "Open Source")
{
Mode = PXBaseRedirectException.WindowMode.NewWindow
};
}
}
}
那是什么？
答案 0 :(得分：2)
当您从ModelChoiceField获取cleaned_data的值时，您将获得模型实例，而不是ID。
从实例中获取主键很容易。请记住处理None。
subscription = form.cleaned_data.get('subscription_id')
if subscription is not None:
subscription_id = subscription.pk