Getting Primefaces datatable row variable via non-ajax button post request

Question

I have a datatable and polling in my Primefaces page. On Datatable on every row there is a commanButton. Because of polling, f:setPropertyActionListener does not works properly on button click. So I set ajax=false at button and trying to get datatable row "var" via a POST request. Is there a way to do that?

<p:poll interval="15" 
       listener="#{batchOperation.generateImportFTDBatchFileReport}" 
       update=":batchOperationsForm:growl :batchOperationsForm:batchfilestbl            
               :batchOperationsForm:dataimporttypeselectiontabview:importFTDbatchfilestbl
               :batchOperationsForm:dataimporttypeselectiontabview:importFTDerrorbatchfilestbl 
               :batchOperationsForm:dataimporttypeselectiontabview:importFTDStatusTxtId" 
       widgetVar="myPoll" autoStart="true"/> 

<p:dataTable id="batchfilestbl" var="batchFile"
                    value="#{batchOperation.batchFileModel}" paginator="true"
                    rows="#{batchOperation.batchFileModel.pageSize}"
                    paginatorPosition="bottom"
                    sortBy="#{batchOperation.createTime}"
                    sortOrder="descending"
                    emptyMessage="#{messages['common.datatable.emptymessage']}"
                    selectionMode="single" 
                    selection="#{batchOperation.selectedFile}">


   <p:column headerText="#{messages['content.batchoperations.datatable.header']}">

           <p:commandButton actionListener="#{batchOperation.createBatchFileForDownloadLatestRevision}"  
                        id="excelCreate" disabled="#{disableExcelVar}"
                        value="#{messages['content.batchoperations.createexcel.button.label']}"
                        ajax="false">
                        <f:setPropertyActionListener value="#{batchFile}"
                            target="#{batchOperation.selectedFile}" />
          </p:commandButton>
     </p:column>
</p:dataTable>

score 0 · Answer 1 · answered Oct 11 '17 at 19:21

If you want to send the whole model object as a parameter to a backing bean method, you can send it in using your var for the data table.

<p:dataTable var="myVar">
    <p:column>
        <p:commandButton actionListener="#{bean.method(myVar)}" />
    </p:column>
</p:dataTable>

Alternatively, if you are only interested in the row index, you can send just that using the rowIndexVar value for the data table.

<p:dataTable rowIndexVar="rowIndex">
    <p:column>
        <p:commandButton actionListener="#{bean.method(rowIndex)}" />
    </p:column>
</p:dataTable>

It looks like you are trying to do file download here. You may want to checkout this question.

Thanks for suggestion, Mitchell. Unfortunately it did not work for me, maybe bacause of JSF/Primefaces version. I found an alternative solution working and posted below. — bahadir_g, Oct 13 '17 at 12:20

score 0 · Accepted Answer · answered Oct 13 '17 at 12:26

Instead of using f:setPropertyActionListener, f:attribute solved my problem.

         <p:commandButton actionListener="#{batchOperation.createBatchFileForDownloadLatestRevision}"  
                            id="excelCreate" disabled="#{disableExcelVar}"
                            value="#{messages['content.batchoperations.createexcel.button.label']}"
                            ajax="false">
                <f:attribute name="bf" value="#{batchFile}" />
         </p:commandButton>

Method:

        public synchronized void createBatchFileForDownloadLatestRevision(ActionEvent event) throws Exception {

             selectedFile = (BatchFile) ((CommandButton) event.getSource()).getAttributes().get("bf");

             .
             .
        }

Getting Primefaces datatable row variable via non-ajax button post request

2 Answers2