指令绑定undefined

Question

我对angularjs有点新。我正在写一个指令，但我不明白bindToController如何运行。我阅读这篇有用的文章http://blog.thoughtram.io/angularjs/2015/01/02/exploring-angular-1.3-bindToController.html，但我不明白为什么在下面的例子中我没有定义。

.directive('firstDirective', function(){ 
    return { 
     restrict: 'E', 
     replace: true, 
     scope: true, 
     bindToController: { 
      directiveInput:'=' 
     }, 
     templateUrl: 'components/directive-tree/directive-tree.html', 
     controllerAs: 'directiveTreeCtrl', 
     controller: function($scope, $uibModal){ 
      var self = this; 
      self.selected = null; 
      console.log(self.directiveInput); //HERE IS THE UNDEFINED 
      $scope.modalOptions = { 
       windowClass: 'semi-modal', 
      } 

      this.openDirectiveModal = function(object, index) { 
       //Other irrelevant code 
      } 
     } 
    } 
}); 

之后，我可以使用没有任何问题的HTML模板的输入。

<ul> 
    <li ng-repeat="object in directiveTreeCtrl.directiveInput"> 
     {{object.Id}}&emsp;{{object.Name}} 
    </li> 
</ul> 

为什么在HTML模板我可以使用directiveInput和它的实例用正确的价值观和我的console.log告诉我“未定义”？

也许这是一个愚蠢的问题。谢谢

Answer 1

通常的代码我写来实现这看起来像这样：

.directive('firstDirective', function(){ 
    return { 
     restrict: 'E', 
     replace: true, 
     scope: { 
      directiveInput:'=' 
     }, 
     bindToController: true, 
     templateUrl: 'components/directive-tree/directive-tree.html', 
     controllerAs: 'directiveTreeCtrl', 
     controller: function($scope, $uibModal){ 
      var self = this; 
      self.selected = null; 
      console.log(self.directiveInput); //HERE IS THE UNDEFINED 
      $scope.modalOptions = { 
       windowClass: 'semi-modal', 
      } 

      this.openDirectiveModal = function(object, index) { 
       //Other irrelevant code 
      } 
     } 
    } 
}); 

现在HTML

<first-directive directive-input="inputObject"></first-directive>