java - Primefaces datatable disapeares after update from commandLink -


when try update datatable comandlink on first time works fine, on second time datatable disapeares yet still see paginator.

here datatable code :

<p:datatable id="tabexam"              paginatorposition="bottom"              var="exam"              value="#{dyna.examviewdatamodel}"              widgetvar="examtable"              emptymessage="aucun résultat trouvé pour votre recherche"              paginator="true"              rows="40"               selection="#{dyna.selectedexamen}"              selectionmode="single"              resizablecolumns="true"                draggablecolumns="true"              paginatortemplate="{currentpagereport} {firstpagelink} {previouspagelink} {pagelinks} {nextpagelink} {lastpagelink} {rowsperpagedropdown}"                rowsperpagetemplate="40,80,120"              rowstyleclass="#{exam.studywithrv_1 == 0 ? 'rv' : exam.studyurgence == 1 ? 'urgent' : null}"> 

   <p:column>          <p:outputlabel value="#{column.dbname}"  styleclass="fonty"/>    </p:column>  </p:columns>   </p:datatable>

this command link code :

<ui:repeat var="list" value="#{dyna.userlist}" varstatus="loop">      <center>       <p:commandlink id="listerlink"                      title="afficher la liste"                      actionlistener="#{datatablebean.updatecolumns(list.id.tbcode)}"                      update=":form1:tabexam,:form1:msg,:form1:displaycols">          <p:graphicimage id="imglist"  value="/images/liste_cold.png"/><br></br>          <p:outputlabel value="#{list.id.tbcode}"/><br></br>        </p:commandlink>      </center>  </ui:repeat>

additional info:

no nested forms.

using p:layout.

beans scope : viewscoped.

everything works fine when draggablecolumns="false".

what possibly missing ?

i have changed <p:commandlink> <h:commandlink> , works charm.


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