Can't get ajax rowSelect event to fire on PrimeFaces DataTable

Question

I am using a PrimeFace DataTable. I want to add the ajax rowSelect event to it. However, when a row is clicked, the event is not fired.

My table is decalred like so:

<h:from>
....
<h:panelGroup id="forumPanelGroup" layout="block" styleClass="messagesPanel" rendered="#{socialAdvertiserTemplateManagedBean.displayForum}" >
            <p:dataTable 
                id="forumDataTable"
                resizableColumns="true"
                var="post" 
                value="#{forumManagedBean.posts}" 
                scrollable="true"
                scrollHeight="300"
                paginator="true"
                rows="10"
                rowKey="#{post.id_value}"
                emptyMessage="No posts found for the given criteria"
                widgetVar="forumTable"
                selectionMode="single"
                tableStyle="width:auto" 
                paginatorPosition="top">

I have the ajax event in there like so:

<p:ajax event="rowSelect" update=":mainForm:displayPost" listener="#{forumManagedBean.rowSelect}" />

And in my backing bean, I have this function:

public void rowSelect(SelectEvent selectEvent)
{
    System.out.println("Hello World");
    ForumPost post = (ForumPost) selectEvent.getObject();
    selectedPost = post;
}

Can anyone see a problem with my declaration that would cause the event to not be triggered. I even looked at it in FireBug, and saw this being submitted after a row is clicked:

javax.faces.ViewState   1786545179464296127:-2498355873814808136
javax.faces.behavior.even...    rowSelect
javax.faces.partial.ajax    true
javax.faces.partial.event   rowSelect
javax.faces.partial.execu...    mainForm:forumDataTable
javax.faces.partial.rende...    mainForm:displayPost
javax.faces.source  mainForm:forumDataTable
mainForm    mainForm
mainForm:forumDataTable_i...    1
mainForm:forumDataTable_s...    0,0
mainForm:forumDataTable_s...    1
mainForm:j_idt181_active    0
mainForm:j_idt70    
mainForm:j_idt72    

So it looks like it is sending the rowSelect. But my server side isnt picking it up.

Solution

you must add : selection="#{forumManagedBean.selectedPost}"

inside your the setter you can display the selected object:

public void setSelectedPost(ForumPost post){
            if(post!=null){
                          System.out.println("Hello World"+post);
                           }
             this.selectedPost=selectedPost;
}

the ajax event in there like so:

<p:ajax event="rowSelect" update=":mainForm:displayPost"/>

Comments

[Darka]

maybe wrong scope? try to use ViewScoped.