根据属性文件渲染SelectItem

发布于 2024-10-23 16:06:00 字数 763 浏览 5 评论 0原文

我有一个 selectOneRadio 菜单，其中包含一些 selectItem。我想显示基于属性文件的选择。例如，如果商店没有信用卡读卡器，那么我不会显示信用选项。应该有一个配置/属性文件指定显示什么和不显示什么。

有办法实现吗？我假设我需要将属性文件读入支持 bean，然后拥有类似“渲染”属性的内容。但是，我刚刚尝试过，“渲染”似乎不适用于 selectItem。

<h:selectOneRadio id="selectedPaymentMethod" layout="pageDirection" 
        value="#{selectPaymentMethodAction.selectedPaymentMethod}">

    <f:selectItem itemValue="online" itemLabel="#{paymentMsg['payment.online.lbl']}"/>
    <f:selectItem itemValue="cash" itemLabel="#{paymentMsg['payment.cash.lbl']}"/>
    <f:selectItem itemValue="credit" itemLabel="#{paymentMsg['payment.credit.lbl']}"/>
    <f:selectItem itemValue="debit" itemLabel="#{paymentMsg['payment.debit.lbl']}"/>

</h:selectOneRadio>

原文

I have a selectOneRadio menu with some selectItem's in them. I want to show the choices based on a property file. For example, if a store doesn't have a credit card reader, then I wouldn't show the credit option. There should be a config/properties file specifiying what is shown and what is not.

Is there a way to accomplish that? I assume I need to read the properties file into the backing bean and then have something like a 'rendered' attribute. However, I just tried and 'rendered' doesn't seem to work for selectItem.

<h:selectOneRadio id="selectedPaymentMethod" layout="pageDirection" 
        value="#{selectPaymentMethodAction.selectedPaymentMethod}">

    <f:selectItem itemValue="online" itemLabel="#{paymentMsg['payment.online.lbl']}"/>
    <f:selectItem itemValue="cash" itemLabel="#{paymentMsg['payment.cash.lbl']}"/>
    <f:selectItem itemValue="credit" itemLabel="#{paymentMsg['payment.credit.lbl']}"/>
    <f:selectItem itemValue="debit" itemLabel="#{paymentMsg['payment.debit.lbl']}"/>

</h:selectOneRadio>

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枕头说它不想醒 2024-10-30 16:06:00

使用，您可以根据捆绑文件使用 List 提供该内容。这样您就可以使用常用的 Java 代码来控制是否应添加该项目。

例如

<f:selectItems value="#{selectPaymentMethodAction.paymentMethods}" />

与

private List<SelectItem> paymentMethods; // +getter

public Bean() {
    paymentMethods = new ArrayList<SelectItem>();
    ResourceBundle bundle = ResourceBundle.getBundle("com.example.Messages", FacesContext.getCurrentInstance().getViewRoot().getLocale());

    if (condition) {
        paymentMethods.add(new SelectItem("online", bundle.getString("payment.online.lbl")));
    }

    // ...
}

Use <f:selectItems> which you feed with a List<SelectItem> based on the bundle file. This way you can control using usual Java code whether the item should be added or not.

E.g.

<f:selectItems value="#{selectPaymentMethodAction.paymentMethods}" />

with

private List<SelectItem> paymentMethods; // +getter

public Bean() {
    paymentMethods = new ArrayList<SelectItem>();
    ResourceBundle bundle = ResourceBundle.getBundle("com.example.Messages", FacesContext.getCurrentInstance().getViewRoot().getLocale());

    if (condition) {
        paymentMethods.add(new SelectItem("online", bundle.getString("payment.online.lbl")));
    }

    // ...
}

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