Aggregation Binding to Child Collection - sapui5

Question

In an XML view I have a JSON model bound to the page with the name 'foo'. The model's object has a 'name' field and child collection 'bar' (that has a 'code' field) that I want to show in a list. This is modeled as such:
JS Code
var foo = { name:'My Name', bar:[{ code:'Code 1' }, { code:'Code 2' }] }
var fooModel = new sap.ui.model.JSONModel(foo);
page.setModel(fooModel, 'foo');
page.bindElement('foo>/');
XML Markup
<Label text='{foo>name}'/>
<List items='{foo>bar}'>
<StandardListItem title='{foo>code}'/>
</List>
Notice that the list item's values for the child 'bar' array are resolved via the name 'foo'. At least this works for me and I have found no other way to reference them in the list.
But the problem is how do I get the top-level 'foo' object data in my list-item also? Say I wanted to show the 'name' field also in the list items?
In other words, is there a way to do the equivalent of the following, where I can reference the child collection by a different name? Is there some way to achieve this?
<List items="{ path:'foo>bar', name='bar' }">
<StandardListItem title='{bar>code}' info='{foo>name}' />
</List>

Answer 1

You need to use an absolute path to bind the name property. Absolute means the complete path to the property within your model. The opposite is a relative binding path. Here you just use a property somewhere within your model and set a binding context to tell the runtime where your property is located within the model. You do this by using:
page.bindElement("foo>/");
Now the runtime will apply this information to all relative bindings against the model foo within this page. Therefore you can write foo>bar and the runtime automatically look up foo>/bar. However within the item aggregation this does not work, because the bar object does not have a property name. Therefore you need to use a absolute binding path to bind the property.
<List items="{foo>bar}">
<StandardListItem title='{foo>code}' info='{foo>/name}' />
</List>
You find an explanation of the binding syntax for JSONModel in the documenation.