Get id of parent naming container in template for in render / update attribute

Question

I have a template and in its Definition I use several forms and buttons.

The problem is the definition (define) xhtml file does not know the component hierarchy.

Answer 1

Additionally to the solutions above I had the problem, that I had to dynamically generate the to-be-updated components (many) based on server-side logic (with maybe harder to find out nesting).

So the solution on the server-side is an equivalent to update=":#{p:component('table2')}"¹ which uses org.primefaces.util.ComponentUtils.findComponentClientId( String designId ):

// UiPnlSubId is an enum containing all the ids used within the webapp xhtml.
// It could easily be substituted by a string list or similar.
public static String getCompListSpaced( List< UiPnlSubId > compIds ) {

    if ( compIds == null || compIds.isEmpty() )
        return "" ;
    StringBuffer sb = new StringBuffer( ":" ) ;
    for ( UiPnlSubId cid : compIds )
        sb.append( ComponentUtils.findComponentClientId( cid.name() ) ).append( " " ) ;
    return sb.deleteCharAt( sb.length() - 1 ).toString() ;  // delete suffixed space
}

called via some other method using it, e.g. like ... update="#{foo.getCompListComputed( 'triggeringCompId' )}".

¹: first I tried without too much thinking to return public static String getCompListSpaced0() { return ":#{p:component('table2')}" ; } in an ... update="#{foo.getCompListSpaced0()} expression, which of course (after thinking about how the framework works :) ) is not resolved (returned as is) and may cause the issues with it some users experienced. Also my Eclipse / JBoss Tools environment suggested to write :#{p.component('table2')} ("." instead of ":") which did not help - of course.