问pushPage无法工作- Onsen monaca phonegap

EN

app.controller('categoryController', function($scope,$http){
    $http.get('http://xxxxxxxxxxxx.com/public/api/v1/category').success(function(response){
        $scope.myCategory = response.data;
    });

    $scope.showSubCategory = function(index) {
        var selectedItem = $scope.myCategory[index];
        var options = { animation: 'slide' };

        $scope.myCategory.selectedItem = selectedItem;

        $scope.ons.navigator.pushPage('subcategory.html', options, {name : selectedItem.name}); 
    };
});

  <ons-navigator>
    <ons-page>
        <ons-toolbar>
            <div class="left">
                <ons-toolbar-button ng-click="app.slidingMenu.toggleMenu()"><ons-icon icon="bars"></ons-icon></ons-toolbar-button>
            </div>
            <div class="center">Home</div>
            <div class="right">
                <ons-toolbar-button ng-click="app.slidingMenu.toggleMenu()"><ons-icon icon="fa-search"></ons-icon></ons-toolbar-button>
            </div>
        </ons-toolbar>


        <ons-list ng-controller="categoryController" id="category-lists">
            <ons-list-item modifier="chevron" class="item" ng-repeat="item in myCategory" ng-click="showSubCategory($index)">
                <ons-row>
                    {{item.name}}
                </ons-row>                          
            </ons-list-item>
        </ons-list>

    </ons-page>   
  </ons-navigator>