gistfile1.txt

MyApp.Application = SC.Record.extend({

  assignments: function() {
    var data = this._data_assignments,
        id = this.get('id'), query;

    if (!data && id) {
      query = SC.Query.local(MyApp.Assignment, 'application = {application}', {application: this});
      data = this._data_assignments = MyApp.get('store').find(query);
    }

    return data;
  }.property('id').cacheable()

});