row counter for html table row

问题

I have HTML table in JSF web application. I am generating rows dynamically using <ui:repeat>. I want a counter for each row. How can I get this? Any help?

Ssimilar to rowKeyVar in rich faces dataTable.

回答1:

Since you are using richfaces, you can do it with its iteration tag (<a4j:repeat>), which is a bit more appropriate than using <c:forEach>, and which is like an extension to <ui:repeat>

<table>
    <a4j:repeat value="#{bean.list}" var="item" rowKeyVar="idx">
        <tr>
            <td><h:outputText value="#{idx + 1}" /></td>
            <td><h:outputText value="#{item.someProperty}" /></td>
            <td><h:outputText value="#{item.otherProperty}" /></td>
        </tr>
    </a4j:repeat>
</table>

回答2:

As of Facelets 2.0, this is now possible using the varStatus.

<ui:repeat varStatus="status" var="user" value="#{collection}">
     #{status.index}
</ui:repeat>

回答3:

You can't do it nicely with the ui:repeat, but you can do so with the h:dataTable. Bind the component to a UIData property in the backing bean. It has a getRowIndex() method which does exactly what you need:

<h:dataTable binding="#{bean.table}" value="#{bean.list}" var="item">
    <h:column><h:outputText value="#{bean.table.rowIndex + 1}" /></h:column>
    <h:column><h:outputText value="#{item.someProperty}" /></h:column>
    <h:column><h:outputText value="#{item.otherProperty}" /></h:column>
</h:dataTable>

Here I am adding 1 to UIData#getRowIndex() because it is zero-based. You may find the Using datatables article useful to learn more about datatables.

If you actually want a bit more control over the table layout (especially using colspans/rowspans, which are lacking in the real JSF h:dataTable tag), then an alternative is to use the JSTL c:forEach tag which has a varStatus attribute which gives you a handle to the loop status.

<table>
    <c:forEach items="#{bean.list}" var="item" varStatus="loop">
        <tr>
            <td><h:outputText value="#{loop.index + 1}" /></td>
            <td><h:outputText value="#{item.someProperty}" /></td>
            <td><h:outputText value="#{item.otherProperty}" /></td>
        </tr>
    </c:forEach>
</table>

回答4:

There is no counter for each row in ui:repeat. As BalusC said you can go for h:datatable. Another idea is indirectly you can add a additional index method in bean for each object in the list in serverside and get that in jsf and manipulate it.

回答5:

A bad (or good idea) is using JavaScript to do that trick.

<script>
    var numberOfIndex = 0;
</script>
<ui:repeat value="#{modelBean.listUser}" var="item">
    <tr>
            <td><script>numberOfIndex -=-1;document.write(numberOfIndex);</script></td>
        <td>${item.id}</td>
        <td>${item.name}</td>
    </tr>
</ui:repeat>

来源：https://stackoverflow.com/questions/1979426/row-counter-for-html-table-row

标签

html

jsf

richfaces

jstl