Filtering epics from Kanban board

Question

I would like to start by saying I have read Rally Kanban - hiding Epic Stories but I\'m still having trouble on implementing my filter based on the filter process from the Estim

Answer 1

Per Charles' hint in Rally Kanban - hiding Epic Stories

Here's how I approached this following Charles' hint for the Rally Catalog Kanban. First, modify the fetch statement inside the cardboardConfig so that it includes the Children collection, thusly:

      fetch: "Name,FormattedID,Children,Owner,ObjectID,Rank,Ready,Blocked,LastUpdateDate,Tags,State"

Next, in between this statement:

      cardboard.addEventListener("preUpdate", that._onBeforeItemUpdated);   

And this statement:

     cardboard.display("kanbanBoard");

Add the following event listener and callback:

    cardboard.addEventListener("onDataRetrieved", 
        function(cardboard, args){
            // Grab items hash
            filteredItems = args.items;

            // loop through hash keys (states)
            for (var key in filteredItems) {

                // Grab the workproducts objects (Stories, defects)                 
                workproducts = filteredItems[key];
                // Array to hold filtered results, childless work products
                childlessWorkProducts = new Array();
                // loop through 'em and filter for the childless
                for (i=0;i

This callback should filter for only leaf-node items.