本文介绍了如何在selectOneMenu中对selectItem进行分组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想使用展示柜中的示例将selectOneMenu中的selectItem分组:
I would like to use the example from the primefaces showcase to group selectItems in selectOneMenu:
<h:outputText value="Grouping: " />
<p:selectOneMenu value="#{formBean.car}">
<f:selectItem itemLabel="Select One" itemValue="" />
<f:selectItems value="#{formBean.cars}" />
</p:selectOneMenu>
我的问题是,没有Bean的实现.现在我不知道如何在方法getCars()中实现selectItems的分组.而且我找不到其他示例.
My problem is, that there is no implementation of the bean. Now I don't know, how to implement the grouping of the selectItems inside the method getCars(). And I can't find any other example.
推荐答案
展示柜#{formBean}
的源代码可用此处.这是相关的摘录:
The source code of the showcase's #{formBean}
is available here. Here's an extract of relevance:
private List<SelectItem> cars;
public FormBean() {
SelectItemGroup g1 = new SelectItemGroup("German Cars");
g1.setSelectItems(new SelectItem[] {new SelectItem("BMW", "BMW"), new SelectItem("Mercedes", "Mercedes"), new SelectItem("Volkswagen", "Volkswagen")});
SelectItemGroup g2 = new SelectItemGroup("American Cars");
g2.setSelectItems(new SelectItem[] {new SelectItem("Chrysler", "Chrysler"), new SelectItem("GM", "GM"), new SelectItem("Ford", "Ford")});
cars = new ArrayList<SelectItem>();
cars.add(g1);
cars.add(g2);
}
因此,您丢失的密钥是 SelectItemGroup
.
Thus, your missing key is SelectItemGroup
.
- 我们的
selectOneMenu
Wiki页面-具有组的动态列表"
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