Question

plunker：http://plnkr.co/edit/CrvOFHSfGnXFFWbaXNxn?p=preview

关闭对话框后，似乎没有处理模态的范围。我有指令，当某个div可用时发出，并且模态控制器接收它。它在第一次打开和关闭时工作正常，一次发出一次接收。在第二个对话框打开和关闭时，一个发出，两个接收，显示有两个控制器实例，并且它会继续打开和关闭任何后续对话框。

在模态对话框被解除后，有没有确保处理控制器范围？

HTML：

<!doctype html>
<html ng-app="ui.bootstrap.demo">
  <head>
    <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.16/angular.js"></script>
    <script src="//angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.11.2.js"></script>
    <script src="example.js"></script>
    <link href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
  </head>
  <body>

<div ng-controller="ModalDemoCtrl">
    <script type="text/ng-template" id="myModalContent.html">
        <div class="modal-header">
            <h3 class="modal-title">I'm a modal!</h3>
        </div>
        <div class="modal-body" my-hook>
            <ul>
                <li ng-repeat="item in items">
                    <a ng-click="selected.item = item">{{ item }}</a>
                </li>
            </ul>
            Selected: <b>{{ selected.item }}</b>
        </div>
        <div class="modal-footer">
            <button class="btn btn-primary" ng-click="ok()">OK</button>
            <button class="btn btn-warning" ng-click="cancel()">Cancel</button>
        </div>
    </script>

    <button class="btn btn-default" ng-click="open()">Open me!</button>
    <button class="btn btn-default" ng-click="open('lg')">Large modal</button>
    <button class="btn btn-default" ng-click="open('sm')">Small modal</button>
    <div ng-show="selected">Selection from a modal: {{ selected }}</div>
</div>
  </body>
</html>

JS：

angular.module('ui.bootstrap.demo', ['ui.bootstrap']);
angular.module('ui.bootstrap.demo').controller('ModalDemoCtrl', function ($scope, $modal, $log) {

  $scope.items = ['item1', 'item2', 'item3'];

  $scope.open = function (size) {

    var modalInstance = $modal.open({
      templateUrl: 'myModalContent.html',
      controller: 'ModalInstanceCtrl',
      size: size,
      resolve: {
        items: function () {
          return $scope.items;
        }
      }
    });

    modalInstance.result.then(function (selectedItem) {
      $scope.selected = selectedItem;
    }, function () {
      $log.info('Modal dismissed at: ' + new Date());
    });
  };
});

// Please note that $modalInstance represents a modal window (instance) dependency.
// It is not the same as the $modal service used above.

angular.module('ui.bootstrap.demo').controller('ModalInstanceCtrl', function ($scope, $modalInstance, $rootScope, items) {

  $scope.items = items;
  $scope.selected = {
    item: $scope.items[0]
  };

  $scope.ok = function () {
    $modalInstance.close($scope.selected.item);
  };

  $scope.cancel = function () {
    $modalInstance.dismiss('cancel');
  };

  $rootScope.$on ('MyTestHook', function(event) {
    console.log("MyTestHook received");
  });
});

angular.module('ui.bootstrap.demo').directive('myHook', function($timeout,$rootScope) {
  function link(scope,element,attrs) {
    $timeout(function(){
     scope.$root.$emit("MyTestHook");
    },500);
  }

  return {
    link: link
  };
});

Answer 1

这不是Modal的问题。模态范围在解雇时完全被销毁。

问题在于代码，因为你在$ rootScope上附加了$，所以每次你点击模型时，它会在$$监听器中添加新的监听器，并且监听器的计数增加1，因为$ rootscope不会被处理掉。

$rootScope.$on ('MyTestHook', function(event) { //every call to open modal will add new listener in rootscope
  console.log("MyTestHook received");
});

为了避免这种情况，请在处理模态解除的范围上附加$ on。

见下面的调试器图片。

enter image description here

http://plnkr.co/edit/iR7rGCFgIchsk4sBg26Q?p=preview

AngularJS UI Bootstrap Scope在模态解除后未被处理

1 个答案: