从看板中过滤史诗

首先我想说我已经读过集会看板 - 隐藏史诗故事但我在根据估算板应用程序的过滤过程实现过滤器时仍然遇到麻烦。目前，我正在尝试将项目过滤器添加到我的纸板的查询对象中。查询对象调用 this._getItems 以返回要从中进行筛选的项目数组。据我所知，查询调用该函数，加载一两秒，然后不显示任何结果。欢迎任何意见、建议或替代解决方案。

这是我的代码

$that._redisplayBoard = function() {


            that._getAndStorePrefData(displayBoard);

            this._getItems = function(callback) {

            //Build types based on checkbox selections
            var queries = [];

                    queries.push({key:"HierarchicalRequirement",
                        type: "HierarchicalRequirement",
                        fetch: "Name,FormattedID,Owner,ObjectID,Rank,PlanEstimate,Children,Ready,Blocked",
                        order: "Rank"

                    });



            function bucketItems(results) {
                var items = [];

                rally.forEach(queries, function(query) {
                    if (results[query.key]) {
                        rally.forEach(results[query.key], function(item) {
                            //exclude epic stories since estimates cannot be altered
                            if ((item._type !== 'HierarchicalRequirement') ||
                                    (item._type === 'HierarchicalRequirement' && item.Children.length === 0)) {
                                items = items.concat(item);

                            }
                        });
      }
                });


               callback(items);
                }

                 rallyDataSource.findAll(queries, bucketItems);

            };

            function displayBoard() {

                artifactTypes = [];



                var cardboardConfig = {

                    types: [],

                    items: that._getItems,

                    attribute: kanbanField,

                    sortAscending: true,

                    maxCardsPerColumn: 200,

                    order: "Rank",

                    cardRenderer: KanbanCardRenderer,

                    cardOptions: {

                        showTaskCompletion: showTaskCompletion,

                        showAgeAfter: showAgeAfter

                    },

                    columnRenderer: KanbanColumnRenderer,

                    columns: columns,

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

                };



                if (showTaskCompletion) {

                    cardboardConfig.fetch += ",Tasks";

                }



                if (hideLastColumnIfReleased) {

                    cardboardConfig.query = new rally.sdk.util.Query("Release = null").or(kanbanField + " != " + '"' + lastState + '"');

                }



                if (filterByTagsDropdown && filterByTagsDropdown.getDisplayedValue()) {

                    cardboardConfig.cardOptions.filterBy = { field: FILTER_FIELD, value: filterByTagsDropdown.getDisplayedValue() };

                }



                cardboardConfig.types.push("HierarchicalRequirement");



                if (cardboard) {

                    cardboard.destroy();

                }



                artifactTypes = cardboardConfig.types;






                cardboard = new rally.sdk.ui.CardBoard(cardboardConfig, rallyDataSource);




                cardboard.addEventListener("preUpdate", that._onBeforeItemUpdated); 
                cardboard.addEventListener("onDataRetrieved", function(cardboard,args){ console.log(args.items); }); 

                cardboard.display("kanbanBoard");

            }

        };


        that.display = function(element) {



            //Build app layout

            this._createLayout(element);



            //Redisplay the board

            this._redisplayBoard();

        };

    };

Per Charles' 暗示集会看板 - 隐藏史诗故事

以下是我根据 Charles 对 Rally Catalog 看板的提示进行处理的方法。首先，修改 cardboardConfig 中的 fetch 语句，使其包含 Children 集合，因此：

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

接下来，在这句话之间：

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

还有这个声明：

     cardboard.display("kanbanBoard");

添加以下事件监听器和回调：

    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<workproducts.length;i++) {
                    thisWorkProduct = workproducts[i];                      
                    // Check first if it's a User Story, since Defects don't have children
                    if (thisWorkProduct._type == "HierarchicalRequirement") {
                        if (thisWorkProduct.Children.length === 0 ) {
                            childlessWorkProducts.push(thisWorkProduct);
                        }
                    } else {
                        // If it's a Defect, it has no children so push it
                        childlessWorkProducts.push(thisWorkProduct);
                    } 
                }
                filteredItems[key] = childlessWorkProducts;
            }
            // un-necessary call to cardboard.setItems() was here - removed
        }
    );

此回调应仅过滤叶节点项。