Get sibling element from PrimeFaces datatable row

Question

I have a datatable created in PrimeFaces which receives and render a list of objects. At the end of the row I have a commandButton element and when it is used it do some stuff on the managedBean on the server.

All the data about the current row is retrieved using an object id placed in the command button in the param attribute.

The problem is that I have a selectOneMenu element and it is not related to the object. I select one value that affects the logic behind.

Here is the table:

<h:panelGrid id="panel" columns="2" bgcolor="#cce4ff"
                     cellpadding="10" cellspacing="1" rendered="#{indexBean.showChannelList}"
                     style="margin-top: 10px; margin-left: 100px;">
            <p:dataTable var="program" value="#{indexBean.programList}" style="width:1000px;"
                         paginator="True" rows="10" rowIndexVar="row" sortBy="#{program.id}"
                         paginatorPosition="bottom" widgetVar="programDT" id="programDT">

... That the select

<p:column headerText="text" width="15%">
                    <h:selectOneMenu id="select-valability" value="#{indexBean.valabilitySelected}" disabled="#{indexBean.disabled}" style="font-size: small;">
                        <f:selectItems value="#{indexBean.listValabilities}" />
                        <f:param value="#{program.id}" />
                        <f:ajax resetValues="true" />
                    </h:selectOneMenu>
                </p:column>

... and there is the command button

<p:column headerText="text" width="20%" style="text-align: center;">
                    <h:commandButton id="cmd-button-id" value="gen JSON" action="#{indexBean.action}" 
                                     style="width: 200px; height: 30px;"
                                     class="ui-button ui-widget ui-state-default ui-corner-all"
                                     >
                        <f:param name="programId" value="#{program.id}" />

                    </h:commandButton>
                </p:column>

I want to be able to get the value of the select element from that specific row from which the action was triggered.

I've try with context.findComponent() but it gives me null even if I put the absolute path to the element with the index generated by JSF table as form:table:index:staticIdOfSelect.

I don't know how to get the sibling element. That was another though.

From the bean class:

@ManagedBean
@SessionScoped
public class IndexBean

I'm really stuck here. Thanks in advance!

user2130951 user2130951 · Accepted Answer · 2015-07-31T12:21:54

Use some element on the row to set an ajax listener in the bean to store the data and then update="the element" you want to get the information from.

Get sibling element from PrimeFaces datatable row

1 Answers