在rich:dataTable中使用a4j:repeat或ui:repeat无法正确呈现单选按钮 [英] Using a4j:repeat or ui:repeat inside rich:dataTable doesn't render radio buttons properly

问题描述

使用<c:forEach>时，项目值未正确替换.如果我在>中使用<a4j:repeat>或<ui:repeat>而不是<c:forEach>，则单选按钮无法正确呈现.我还在 http://community.jboss.org/wiki/Cantusea4jrepeattoiteratethemenuItemstabsetc 中找到了原因

While using <c:forEach> the items values is not substituted properly. If i use <a4j:repeat> or <ui:repeat> instead of <c:forEach> inside a <rich:dataTable>, radio button is not rendering properly. I also found reason for this in http://community.jboss.org/wiki/Cantusea4jrepeattoiteratethemenuItemstabsetc

如何解决此问题?

<f:selectItems>在内部工作，但我想将选择类型发送到服务器

<f:selectItems> is working inside but i want to send a choice type to server

  <rich:dataTable var="answer" value="#{answers}">
    <rich:column>
      <f:selectOneRadio value="#{response.value}">
        <c:forEach items="#{answer.choices}" var="choice">
            <f:selectItem itemLabel="#{choice.value}" itemValue="#{choice.type}"/>
        </c:forEach>
     </f:selectOneRadio>
   </rich:column>
  </rich:dataTable>

推荐答案

如果您已经在使用JSF 2.x，则可以使用以下结构:

If you're already on JSF 2.x, then you can just use the following construct:

<f:selectItems value="#{answer.choices}" var="choice" itemValue="#{choice.type}" itemLabel="#{choice.value}" />

如果您仍在使用JSF 1.x，那么最好将f:selectItems与answer bean的构造函数中的以下逻辑结合使用以预填充它:

If you're still on JSF 1.x, then best is to use f:selectItems in combination with the following logic in the constructor of answer bean to prepopulate it:

this.selectItems = new ArrayList<SelectItem>();
for (Choice choice : this.choices) {
    selectItems.add(new SelectItem(choice.getType(), choice.getValue()));
}

这样您就可以结束

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

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