如何从p:blockUI触发器引用p:dataTable中的p:commandLink?

问题描述

这对我不起作用:

<h:form id="wfMgtForm">
    .
    .
    .
    <p:dataTable id="wfTable" ..." var="item">
        <p:column>
        .
        .
        .
        </p:column>
        <p:column>
            <p:commandLink id="editWatchfolderButtonId" oncomplete="dlgEditWF.show()" update=":editWFForm" process="@none">
                <f:param value="#{item.value.ID}" name="editId"/>
                <h:graphicImage alt="Edit Image" style="border: none" value="./images/edit.png" />
            </p:commandLink>
        </p:column>
    .
    .
    .
    <p:blockUI block=":wfMgtForm" trigger="editWatchfolderButtonId">
        Loading...<br/>
        <p:graphicImage alt="Loader Image" value="/images/loader.gif"/>
    </p:blockUI>
</h:form>

我得到的错误是:

Cannot find component with identifier "editWatchfolderButtonId".

当我使用Firebug查找ID时，我发现每一行都有不同的ID:

When I used Firebug to look for the ID, I discovered that every row has a different ID:

wfMgtForm:wfTable:0:editWatchfolderButtonIdwfMgtForm:wfTable:1:editWatchfolderButtonIdwfMgtForm:wfTable:2:editWatchfolderButtonIdwfMgtForm:wfTable:3:editWatchfolderButtonId
等

wfMgtForm:wfTable:0:editWatchfolderButtonIdwfMgtForm:wfTable:1:editWatchfolderButtonIdwfMgtForm:wfTable:2:editWatchfolderButtonIdwfMgtForm:wfTable:3:editWatchfolderButtonId
etc.

如何从我的<p:blockUI>引用此自动创建的ID?

How should I reference this auto created IDs from my <p:blockUI>?

推荐答案

<p:dataTable>也是NamingContainer.还要包括其ID.

The <p:dataTable> is also a NamingContainer. Include its ID as well.

<p:blockUI ... trigger="wfTable:editWatchfolderButtonId">

行索引仅存在于客户端，而不存在于服务器端，因此不相关.

The row index is only present in client side, not in server side, so that's not relevant.

更新:只是在本地对其进行了测试，它确实修复了异常，但它根本没有触发块UI(PrimeFaces 3.5).看起来像是PrimeFaces中的错误.

Update: just tested it locally, it indeed fixes the exception, but it didn't trigger the block UI at all (PrimeFaces 3.5). Look like a bug in PrimeFaces.

与此同时，最好的选择是按照Aksel的建议手动触发它，但又有所不同:

In the meanwhile, your best bet is to manually trigger it as suggested by Aksel, but then somewhat different:

<p:commandLink ... onclick="bui.show()" oncomplete="bui.hide()">
...
<p:blockUI widgetVar="bui" />

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