Why does a subTable break a4j:commandLink's reRender?

StackOverflow https://stackoverflow.com/questions/2689799

  •  01-10-2019
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Question

Here is a minimal rich:dataTable example with an a4j:commandLink inside. When clicked, it sends an AJAX request to my bean and reRenders the dataTable.

<rich:dataTable id="dataTable" value="#{carManager.all}" var="item">
    <rich:column>
        <f:facet name="header">name</f:facet>
        <h:outputText value="#{item.name}" />
    </rich:column>
    <rich:column>
        <f:facet name="header">action</f:facet>
        <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}">
                <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" />
                <f:param name="from" value="list" />
        </a4j:commandLink>
    </rich:column>
</rich:dataTable>

The exmaple obove works fine so far. But when I add a rich:subTable (grouping the cars by garage for example) to the table, reRendering fails...

<rich:dataTable id="dataTable" value="#{garageManager.all}" var="garage">
    <f:facet name="header">
        <rich:columnGroup>
            <rich:column>name</rich:column>
            <rich:column>action</rich:column>
        </rich:columnGroup>
    </f:facet>

    <rich:column colspan="2">
        <h:outputText value="#{garage.name}" />
    </rich:column>

    <rich:subTable value="#{garage.cars}" var="car">
        <rich:column><h:ouputText value="#{car.name}" /></rich:column>
        <rich:column>
            <a4j:commandLink reRender="dataTable" value="Delete" action="#{carForm.delete}">
                    <f:setPropertyActionListener value="#{item.id}" target="#{carForm.id}" />
                    <f:param name="from" value="list" />
            </a4j:commandLink>
        </rich:column>
    </rich:column>
</rich:dataTable>

Now the rich:dataTable is not rerendered but the item gets deleted since the item does not show up after a manual page refresh.

Why does subTable break support for reRender-ing here?

Tanks Tom

Was it helpful?

Solution

It turned out that Hibernate did not update the list of the related models.

After removing the Car using AppFuse's carManager, the deleted car still showed in the getCars()-list of the associated Garage [when receiving the Garages using garageManager.getAll()].

So the problem was not related to richfaces itself!

Currently I'm using a workaround (deleting the items manually when receiving the data from the related model oO) but maybe I'll open a new question to solve this problem.

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