JSF 2.0中数据表中同一列中的不同组件 [英] Different components in same column in datatable in JSF 2.0

问题描述

使用JSF 2.0是否可以在数据表的单个列中使用不同类型的组件?

Is it possible to have different types of components in a single column in a data table using JSF 2.0?

我的要求是，根据label列的值，value列将具有相应的输入文本或选择列表.

My requirement is that based on the label column value, the value column will have an input text or select list accordingly.

当前，我正在尝试通过备用bean来执行此操作.我在arraylist中有label，value和type of component(例如"selectlist").

Currently I'm trying to do this via a backing bean. I have the label, value and type of component (e.g. "selectlist") in an arraylist.

当我在数据表中迭代此列表时，如何检查类型并根据结果创建输入列表或选择列表?

When I'm iterating this list in a data table, how do I check the type and depending on the outcome create either an input or select list?

推荐答案

在测试中使用rendered属性，该测试使用您使用的属性来区分输入列表和选择列表.

Use the rendered attribute with a test that uses whatever it is you use to distinguish between an input and a select list.

例如

<h:dataTable value="#{yourBacking.yourList} var="item">
    <h:column>
        <h:inputText value="#{item.value}" rendered="#{item.type == 'input'}" />
        <h:selectOneMenu value="#{item.value}" rendered="#{item.type == 'selectlist'}">
            <f:selectItems value="#{item.values}" />
        </h:selectOneMenu>
    </h:column>
</h:dataTable>

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