AngularJS通过控制器集从数据库获取数据作为数组在视图中显示

Question

angular.module('app', []).controller('Tree', function ($scope,med){
    $scope.med= med.Categories.query();
    //query() have service in which data get from db

    $scope.data = [{ /* i want this id:med.id */          
        'id': 1,
        'title': 'one',
        'parent':0,
        'nodes': [
            {
                'id': 2,
                'title': 'wadood',
                'parent':1
            },
            {
                'id': 3,
                'title': 'nouman',
                'parent':1
            }
        ]
    }]; 
}