Breeze.js loadNavigationProperty与expand

Question

Is it possbible to call loadNavigationProperty with expanding the entities? Something like:

myGarage.entityAspect.loadNavigationProperty('car.wheels');

Or is this only possible with a new query?

Answer 1

You can only use loadNavigationProperty with immediate nav properties (ie myGarage.car).

We'll update our documentation so there is no confusion.

Answer 2

Based on breeze source:

    function loadNavigationalProperty(entity, propertyName, forceReload, expand) {
        if (forceReload || !entity.entityAspect.isNavigationPropertyLoaded(propertyName)) {
            var navProperty = entity.entityType._checkNavProperty(propertyName);
            var query = breeze.EntityQuery.fromEntityNavigation(entity, navProperty);
            if (expand) query = query.expand(expand);
            return manager.executeQuery(query).catch(queryFailed);
        } 
        return $q.resolve({ results: entity[propertyName] });
    }