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Support Article

Page error message wiped off due to section reload



Page error messages are erased when the ReloadSection activity is invoked (unexpectedly) for the pyFeedInner section.

Error Messages

Not Applicable

Steps to Reproduce

Submit an Assignment.

Root Cause

A defect in Pegasystems’ code or rules.


Perform the following local-change:
  1. Open the UserWorkForm rule.
  2. Save As to the application ruleset (if not saved already).
  3. Copy and paste the below code snippet.


     if( pega.ui.template.pzRDLTemplate && pega.ui.template.pzRDLTemplate ){

         pega.ui.template.pzRDLTemplate.loadPage = function(startIndex, pageCount, RDLNode, event, callback,fromFetchAndAppend) {
            if(startIndex<pageCount) return;
              var dataSource = RDLNode.getAttribute('data-repeat-source');
              var isLargeDP = false;
              var dpName = dataSource.substring(0, dataSource.indexOf("."));
              var isLargeDP = pega.ui.ClientCache.isLargeDatapage(dpName);
              var endIndex;
              /* Fetch the pageList with the required set of rows. */
              /* Set the start and endIndex. */
              startIndex = parseInt(startIndex);
              pageCount = parseInt(pageCount);
              endIndex = startIndex + pageCount - 1; /* BUG-379365 */
              if(pageCount == -1) endIndex = -1;
              var options = {
                  startIndex: startIndex,
                  endIndex: endIndex,
              if(fromFetchAndAppend) options.fromFetchAndAppend = true;  
              var callbackObj = {
                success: function(responseObj){
                  /* Check if there are any errors and do not proceed with page rendering */
                  var reloadElement = responseObj.argument[0];
                  /* Check for exceptions and abort if any are found */
                  if (pega.u.d.checkExceptions(responseObj.responseText, reloadElement)) {
                    pega.u.d.inCall = false;
                    if (pega.u.d.changeInEventsArray);
                  /* US-265871: Do not return without rendering the next set of rows */
                  if(!isLargeDP) {
                  responseObj.argument = null;
                failure: function(){
                  console.log("Pagination failed");
            var oArgs = {
                  "strReloadType": "partial-refresh",
                  "reloadElement": RDLNode,
                  "bFormSubmit": false,
                  "bSectionSubmit": false,
                  "event" : event,
                  "callback": callbackObj,
                  "pzKeepPageMessages": true, /* US-265871: Preserve errors*/
                  "preActivity": callback ? "" : "pzInvokeRDLPreProcessing" /*BUG-381209: Tagging the extension point activity to the reload infrastructure*/
            if(pega.u.d.ServerProxy.isDestinationLocal()) {
              oArgs.partialMetadataPath = RDLNode.getAttribute("data-path"); /* partialMetadataPath is used in renderUI callback to retrive partial metadata. */
              oArgs.generateMetadataFn = function(rdlMetadata) { /* Partial metadata retrieved from partialMetadataPath is passed to this method. This method updates the metadata with next page info and keeps the metadata inline to "nextPage" renderer. */
                    var TEMPLATE_CONSTANTS = pega.ui.TEMPLATE_CONSTANTS;
                    rdlMetadata.pyName = "nextPage";
                    rdlMetadata[TEMPLATE_CONSTANTS["PYSTARTINDEX"]] = startIndex;
                    rdlMetadata[TEMPLATE_CONSTANTS["PYENDINDEX"]] = startIndex + pageCount - 1; /* TODO: Need to verify this after US-226992 changes tweaked the calculation */
                    if(rdlMetadata.section && 
                       rdlMetadata.section.sectionbody[0] && 
                       rdlMetadata.section.sectionbody[0][TEMPLATE_CONSTANTS["PYPAGELISTPROPERTY"]]) {
                      rdlMetadata[TEMPLATE_CONSTANTS["PYPAGELISTPROPERTY"]] = rdlMetadata.section.sectionbody[0][TEMPLATE_CONSTANTS["PYPAGELISTPROPERTY"]]; /* This is needed to keep the metadata inlint to "nextPage" renderer. */
                    if(isLargeDP) { /* RDL node is used by "nextPage" renderer to load page and its reference is cleared after usage. */
                      rdlMetadata.RDLNode = RDLNode;
              } else {
                var oSafeURL = new SafeURL();
                oSafeURL.put("listAction", "PAGINATE"); /*BUG-381209: Appending necessary param for the pyPreListAction activity*/
                oSafeURL.put("listPageSize", pageCount);
                oSafeURL.put("pyCallStreamMethod", RDLNode.getAttribute('data-nextpagemethod'));
                  oSafeURL.put("listStartIndex", startIndex);
                  oSafeURL.put("listEndIndex", endIndex);
                oArgs.appendExtraQueryString = oSafeURL;
            if (pega.u.d.isSafeToReload(RDLNode)) {
            } else {
              setTimeout(function() {
                pega.ctx.RDL.isLoading = true;
                pega.ui.template.pzRDLTemplate.loadPage(startIndex, pageCount, RDLNode, event, callback);
              }, 0);
      } );

  4. Save and Check In the rule.
  5. Test the scenario.

Published December 2, 2019 - Updated December 2, 2021

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