showing different items of a list in dataTable - jsf

Question

I would like to show different items of a list in my dataTable
I tried ui:repeat but it's seems not working
I have an object Demande(Classe demande) it has a list of Choix and I want to show for all demandes the choice and the periode(Classe Periode) of each choice(classe Choix)
<p:dataTable id="estivage" var="it" emptyMessage="Aucune demande !"
value="#{demandeController.allDemandes}" paginator="false" style="width: 800px"
rows="10"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowsPerPageTemplate="5,10,15">
<f:facet name="header">
Liste des Demandes pour la periode d'éstivage
</f:facet>
<p:column style="text-align:center" sortBy="#{it.utilisateur.nom}">
<f:facet name="header">
<h:outputText value="Adherent" />
</f:facet>
<h:outputText value="#{it.utilisateur.nom}" />
<h:outputText value=" " />
<h:outputText value="#{it.utilisateur.prenom}" />
</p:column>
<p:column style="text-align:center" sortBy="#{it.dateDemande}">
<f:facet name="header">
<h:outputText value="Date de la demande" />
</f:facet>
<h:outputText value="#{it.dateDemande}">
<f:convertDateTime pattern="dd/MM/yyyy 'à' HH:mm:ss" />
</h:outputText>
</p:column>
<ui:repeat var="item" value="#{it.listChoix}">
<p:column style="text-align:center">
<f:facet name="header">
<h:outputText value="chalet " />
</f:facet>
<h:outputText value="#{item.chaletChoisi}" />
</p:column>
<p:column style="text-align:center">
<f:facet name="header">
<h:outputText value="periode " />
</f:facet>
<h:outputText value="#{item.periode.libelle}" />
</p:column>
</ui:repeat>
<p:column style="text-align:center">
<f:facet name="header">
<h:outputText value="Mode paiement" />
</f:facet>
<h:outputText value="#{it.modePaiement}">
</h:outputText>
</p:column>
</p:dataTable>
any help please

Answer 1

You have <p:column> in your ui:repeat. It doesn't work well. You could try SubTable from Primefaces.
See example from Primefaces Showcase:
http://www.primefaces.org/showcase/ui/datatableSubTable.jsf
The list of Choix for every Demandesyou can show then in SubTable.
Another possibility is if you use nested DataTables. Use a p:column of "estivage" table and define inside that column another datatable that shows the list of Choix.
<p:dataTable id="estivage" var="it">
<p:column header="choice and periode">
<p:dataTable var="item" value="#{it.listChoix}">
<p:column style="text-align:center">
<f:facet name="header">
<h:outputText value="chalet " />
</f:facet>
<h:outputText value="#{item.chaletChoisi}" />
</p:column>
<p:column style="text-align:center">
<f:facet name="header">
<h:outputText value="periode " />
</f:facet>
<h:outputText value="#{item.periode.libelle}" />
</p:column>
</p:dataTable>
</p:column>
</p:dataTable>