jsf - How to AJAX update components in single tab of p:accordionPanel from outside? -

i have p:accordionpanel represents list of items , in each tab there form. upon submitting of repeating forms, possible data in needed, when p:dialog popped prompting user enter more data. dialog defined outside accordion panel because, unlike items accordion, 1 of them can showing @ time there no need augment html served repeating in each tab of accordion.

the definition of accordion looks follows (simplified relevant descriptors):

<p:accordionpanel id="myaccordion" value="#{managedbean.getaccordionlist}" var="item" multiple="false" dynamic="true" cache="true">      <p:ajax event="tabchange" listener="#{managedbean.processtabchange}"/>      <p:tab title="#{item.tabtitle}" id="itemtab">          <h:form id="itemform">              <h:outputlabel for="itemname" value="item name:"/>             <p:inputtext id="itemname" title="item name:"                      maxlength="16" value="#{appeal.itemname}">             </p:inputtext> 

consequently, html rendered itemname myaccordion:0:itemform:itemname in first instance, myaccordion:1:itemform:itemname in second, etc.

the dialog defined follows:

<p:dialog id="commentdialogid" header="enter comment" widgetvar="commentdialog" modal="true" resizable="true" height="auto">     <h:form id="commentform">          <h:outputlabel for="comment" value="comment:"/>          <p:inputtextarea id="comment" title="comment"                  rows="6" cols="33"                 value="#{managedbean.activeitem.comment}"                 required="true">             <f:ajax render="comment"/>         </p:inputtextarea>          <h:commandbutton value="submit" action="#{managedbean.proceed}" onclick="pf('commentdialog').hide();">             <f:ajax render="*** ??? ***"/>         </h:commandbutton>      </h:form> </p:dialog>  

what have repeatedly been failing @ attempts f:ajax update single tab in accordion panel, active 1 dialog popped up. tried using

:myaccordion:#{managedbean.activeitem.displayindex}:itemform:itemname :myaccordion:#{managedbean.activeitem.displayindex}:itemform :myaccordion:#{managedbean.activeitem.displayindex}:itemtab 

in place of *** ??? *** none of them compile:

javax.faces.facesexception: <f:ajax> contains unknown id ':myaccordion:0:itemform' - cannot locate in context of component j_idt20 

if skip index token (e.g. :myaccordion:itemform:itemname) compile functionally nothing. item entity class has getdisplayindex accurately return index of active tab.

my problem quite similar described in this question, doesn't have answer. limitation of primefaces?

i don't know version of primefaces using, seems bug in primefaces 5.1.1 recreate issue. upgrading primefaces 5.2, ajax el find referenced id. can post mcve if needed.

edit: mcve:

xhtml:

<h:form id="itemform">     <p:accordionpanel id="myaccordion" binding="#{accordionview}" value="#{playgroundcontroller.users}" dynamic="true" activeindex="#{playgroundview.activeindex}" var="user" multiple="false">          <p:ajax event="tabchange" update="commentdialogid"/>          <p:tab title="#{user.name}">                 <h:outputlabel for="itemname" value="item name:" />                 <p:inputtext id="itemname" title="item name:" maxlength="16"                     value="#{user.amount}">                 </p:inputtext>                 <p:commandbutton value="showdialog" onclick="pf('commentdialog').show();"></p:commandbutton>         </p:tab>      </p:accordionpanel> </h:form>  <p:dialog id="commentdialogid" header="enter comment" widgetvar="commentdialog" modal="true" resizable="true" height="auto">     <h:form id="commentform">          <h:outputlabel for="comment" value="comment:"/>          <p:inputtextarea id="comment" title="comment"                  rows="6" cols="33"                 value="#{playgroundview.activeindex}"                 required="true">             <f:ajax render="comment"/>         </p:inputtextarea>          <p:commandbutton value="submit" onclick="pf('commentdialog').hide();" update=":itemform:myaccordion:#{playgroundview.activeindex}:itemname" ></p:commandbutton>      </h:form> </p:dialog>  

playgroundview bean:

note in example activeindex has have initial value, otherwise el:

update=":itemform:myaccordion:#{playgroundview.activeindex}:itemname" 

will resolve wrongly , throw error cannot find id of referenced component. of course has drawback first tab open when page loads, that's issue

private string activeindex = "0";  public string getactiveindex() {     return activeindex; }  public void setactiveindex(string activeindex) {     this.activeindex = activeindex; } 

playgroundcontroller bean:

private list<user> users; @override     public void initializeview() {     createusers(); }  public void createusers() {         user user1 = new user();         user user2 = new user();         user user3 = new user();         user1.setname("user123");         user1.setamount(1);         user2.setname("user456");         user2.setamount(2);         user3.setname("user12312345111111111111111111111111111");         user3.setamount(3);         list<user> userlist = new arraylist<user>();         userlist.add(user1);         userlist.add(user2);         userlist.add(user3);         users = userlist;     } 

user:

public class user implements serializable {     string name;     int amount = 0; }