如何让< f:facet>包含多个组件?它只显示第一个

问题描述

我使用<f:facet>创建一个表头，并且我希望在它旁边有一个符号.但是，它似乎运行不佳.该符号未呈现.

I use <f:facet> to create a table header and I want a symbol beside it. However, it doesn't seem to work well. The symbol is not rendered.

JSF:

<h:column id="subject_column">
  <f:facet name="header">
    <h:commandLink value="Subject" id="sort_by_subjects"
                   action="#{xxx.sort}">
      <f:param id="sortBySubject" name="sortBy" value="SUBJECT"/>
    </h:commandLink>
    <span>${isAscending}</span>
  </f:facet>
  <h:outputText value="#{email.emailSubject}"/>
</h:column>

${isAscending}包含箭头符号↑并表示顺序.我想在<h:commandLink>旁边展示它.

${isAscending} contains the arrow symbol ↑ and represents the order. I would like to show it beside <h:commandLink>.

推荐答案

<f:facet>只能有一个孩子.将多个子项包装在<h:panelGroup>中.

The <f:facet> can have only one child. Wrap multiple children in a <h:panelGroup>.

<h:column>
    <f:facet name="header">
        <h:panelGroup>
            <h:commandLink ... />
            <h:outputText ... />
        </h:panelGroup>
    </f:facet>
    ...
</h:column>

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