Querying on DirectChildrenCount Rally JS SDK - extjs

Question

I checked out some other questions posted previously but couldn't find a relevant answer. So here I am posting again: Here's my code:
Ext.create('Rally.data.WsapiDataStore',{
autoLoad: true,
model: 'HierarchicalRequirement',
limit: '500',
fetch: ['ObjectID','DirectChildrenCount','FormattedID'],
filters:[{property: 'DirectChildrenCount', operator: '=', value: 0}], //tried both "0",'0'
listeners: {
load: function(store,data,success){
var data_length = data.length;
console.log("Number = ", data);
}
}
});
Result is an empty array. Furthermore, the result did not contain the field "DirectChildrenCount" at all, even though I am fetching it.

Answer 1

I tried your code without any changes, and it returned 300+ items. DirectChildrenCount was included in the result. It was tested against "2.0rc2" and "2.0rc1" with the same result. Here is screenshot from Chrome's DevTools:
Here is another short app where a grid of stories updated since yesterday is built, filtered by the same condition.
{property: 'DirectChildrenCount', operator: '=', value: 0}
js file is below:
Ext.define('CustomApp', {
extend: 'Rally.app.App',
componentCls: 'app',
launch: function() {
var millisecondsInDay = 86400000;
var currentDate = new Date();
var startDate = new Date(currentDate - millisecondsInDay);
var startDateUTC = startDate.toISOString();
Rally.data.ModelFactory.getModel({
type: 'UserStory',
success: function(model) {
this.grid = this.add({
xtype: 'rallygrid',
itemId: 'grid',
model: model,
columnCfgs: [
'FormattedID',
'Name',
'Owner',
'LastUpdateDate'
],
storeConfig: {
filters: [
{
property: 'LastUpdateDate',
operator: '>',
value: startDateUTC
},
{
property: 'DirectChildrenCount',
operator: '=',
value: 0
},
]
}
});
},
scope: this
});
console.log('items updated since', startDateUTC);
}
});