如何在数据表中使用ui:repeat追加列? [英] How to use ui:repeat in datatable to append columns?

问题描述

我想生成一个表列表.每月1张桌子.每个月的每一天都有1列.这是我正在使用的JSF.

I want to generate a list of tables. 1 table for each month. With 1 column for each day of the month. Here is the JSF piece I am using.

<ui:repeat value="#{worklogService.months}" var="monthnum">
    <p:dataTable value="#{worklogService.getTableForMonth(monthnum)}" var="tabrow">
        <p:column headerText="Name">
            <h:outputLabel value="#{tabrow.get(0)}"></h:outputLabel>
        </p:column>
        <ui:repeat value="#{worklogService.getDaysOfMonth(monthnum)}" var="daynum">
            <p:column headerText="#{daynum}">
                <h:outputText value="#{tabrow.get(daynum)}"></h:outputText>
            </p:column> 
        </ui:repeat>
    </p:dataTable>
</ui:repeat>

#{worklogService.months}返回List<Integer>.每月一个号码. #{worklogService.getTableForMonth(monthnum)}返回List<List<String>>.

#{worklogService.months} returns List<Integer>. One number per Month. #{worklogService.getTableForMonth(monthnum)} returns List<List<String>>.

每个表的第一列都是相同的.我想根据月份生成所有其他列.结果是只有1列的12个表(第一列).这可能是什么问题?以及如何解决?

The first column for each table is the same. I want to generate all other columns depending on the month. The result is 12 Tables with only 1 column (the first). What could be the problem here? And how to solve it?

推荐答案

此构造失败的原因是，像<p:dataTable>这样的UIData组件仅支持UIColumn子级，在<p:dataTable>情况下只能是<p:column>或<p:columns>.

This construct fails because UIData components like <p:dataTable> only support UIColumn children which can in case of <p:dataTable> only be either <p:column> or <p:columns>.

在您的特定情况下，您有2个选择:

In your particular case, you've 2 options:

1. 使用<p:columns>代替<ui:repeat><p:column>:

<p:columns value="#{worklogService.getDaysOfMonth(monthnum)}" var="daynum" headerText="#{daynum}">
    #{tabrow.get(daynum)}
</p:columns> 

使用<c:forEach>代替<ui:repeat>(在此处说明):

Use <c:forEach> instead of <ui:repeat> (explained here):

<c:forEach items="#{worklogService.getDaysOfMonth(monthnum)}" var="daynum">
    <p:column headerText="#{daynum}">
        <h:outputText value="#{tabrow.get(daynum)}"></h:outputText>
    </p:column> 
</c:forEach>

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