指令内的Change指令变量无效

主控制器为:

angular.module("app").controller('vehicleManagementController', ['$scope', 'toastr', '$filter' ,
function ($scope, toastr, $filter) {
    .....
    $scope.filteredDevices = //Some List
    $scope.allDevices = [];
 }
}]);

angular.module('app').directive('advanceSearchDirective', ['deviceAdvancedSearchService', 'mapService', function (deviceAdvancedSearchService, mapService) {
return {
    restrict: "E",
    controller: 'myDirectiveController',
    scope: { filteredDevices: '=filteredDevices' },
    templateUrl: '/app/templates/advanceSearchDirective.html'
};
 }]);

angular.module("app").controller(myDirectiveController( $scope) {
    $scope.search = function() {
       $scope.filteredDevices = [];
      $scope.$apply();  
     }
});

问题是它无法运行apply()方法 this 错误 下面是我如何使用它:

 <advance-search-directive filtered-devices="filteredDevices" model="$parent"></advance-search-directive>

$scope.filteredDevices