How do I display a list of items inside a list of items on a JSF page? [duplicate] - jsf

Question

<h:dataTable value="#{SearchingBeans.list}" var="entry">
<h:column>
<f:facet name="header">
<h:outputLabel>Photo</h:outputLabel>
</f:facet>
</h:column>
<h:column>
<f:facet name="header">
<h:outputLabel>Pseudo</h:outputLabel>
</f:facet>
<h:outputLabel value="#{entry.pseudo}"></h:outputLabel>
</h:column>
<h:column>
<f:facet name="header">
<h:outputLabel>Description</h:outputLabel>
</f:facet>
<h:outputLabel value="#{entry.description}"></h:outputLabel>
</h:column>
<h:column>
<f:facet name="header">
<h:outputLabel>Photo</h:outputLabel>
</f:facet>
<h:outputLabel value="#{entry.photo[0].path}"></h:outputLabel> <-- this a List
</h:column>
</h:dataTable>
i got a entities member one of his property is a List photo with get/set
that property is populate
i don't know how to fetch that value in jsf i want only the first picture for each member since their have 2-3 photos. Its that possible?? any other solution will be appreciate.

Answer 1

Just iterate over it using <ui:repeat> or <h:dataTable> the usual way. It's perfectly valid to nest multiple iterating components in each other. In case of <h:dataTable>, you only need to make sure that you put the nested iterating component inside a <h:column>.
E.g.
<h:dataTable value="#{bean.entities}" var="entity">
<h:column>
#{entity.property}
</h:column>
<h:column>
<ui:repeat value="#{entity.subentities}" var="subentity">
#{subentity.property}
</ui:repeat>
</h:column>
</h:dataTable>
or
<h:dataTable value="#{bean.entities}" var="entity">
<h:column>
#{entity.property}
</h:column>
<h:column>
<h:dataTable value="#{entity.subentities}" var="subentity">
<h:column>
#{subentity.property}
</h:column>
</h:dataTable>
</h:column>
</h:dataTable>
You'll potentially only run into issues when you nest multiple <ui:repeat> components and use <f:ajax> in it while using an older version of Mojarra.
Only JSTL <c:forEach> wouldn't work when nested inside a JSF iterating component for the reasons explained here JSTL in JSF2 Facelets... makes sense?
Unrelated to the concrete problem, please don't abuse <h:outputLabel> for pure text presentation. It generates a HTML <label> element which is intented to label an input element by for attribute. However, you're doing that nowhere in the code. You should be using <h:outputText> instead. By the way, I'm lately seeing this more often in code of starters. There must be somewhere a bad tutorial or resource which is abusing the <h:outputLabel> this way instead of <h:outputText> or even plain EL in template text. Which tutorial/resource was you using? Then I can contact the author about this severe misinstruction. See also Purpose of the h:outputLabel and its "for" attribute