SDK2: Cant get UserStories when querying Portfolio Items - rally

Question

Is this a bug? When I query for portfolio items, and in the store I fetch:
fetch: ['UserStories', 'HierarchicalRequirement']
I don't see any children of the PI in the data returned. I checked with the manual API for that same OID and confirmed it does have children.
If I do a query with HierarchicalRequirements instead of PortfolioItems, and fetch the 'Children' field, I can see the entire Hierarchy.
What gives with PI's? Is the query broken for children?

Answer 1

Querying against the generic PortfolioItem endpoint will return you PIs from all levels of the hierarchy- most will have a Children collection of PIs. Only the bottom level PI will have a UserStories collection.
Assume you have a PI hierarchy like so:
Top
Middle
Bottom
To get Top items you'd query the PortfolioItem/Top type and fetch Children to include the Middle items.
To get Bottom items you'd query the PortfolioItem/Bottom type and fetch UserStories to include its children.
Edit: I'm able to get user stories back using this code in both 2.0p3 and 2.0p4:
Ext.create('Rally.data.WsapiDataStore', {
model: 'PortfolioItem/Feature',
context: this.getContext().getDataContext(),
fetch: ['UserStories', 'Name', 'FormattedID'],
autoLoad: true,
listeners: {
load: function(store, records) {
Ext.each(records, function(record) {
var stories = record.get('UserStories');
Ext.each(stories, function(story) {
console.log(story.FormattedID + ' - ' + story.Name);
});
});
}
}
});