Question

我目前正在向AngularJS介绍自己，我正在编写一个按钮的代码，点击该按钮会弹出一个模态。模态弹出很好。当我点击＆＃39; X＆＃39;在模态上，它也消失了。设置为false以使模式弹出的布尔值再次变为真，一切顺利但模态不会第二次弹出。为什么会这样？

HTML：

<input type="button" ng-click="toggleModal()" class="btn btn-default" value="Path">{{showModal}}
<modal title="Select a Testcase" visible="showModal">
    <form role="form" >
        <div class="form-group" style="padding: 5%">
            <div id="tree_div"></div>
        </div>
        <input type="button" value="Submit" class="btn btn-default">
    </form>
</modal>

JAVASCRIPT：

$scope.showModal =  false;

        $scope.toggleModal = function(){
            $scope.showModal = !$scope.showModal;
        };

指令：

'use strict';

angular.module('chariot').directive('modal', function () {
   return {
      template: '<div class="modal fade">' +
         '<div class="modal-dialog">' +
            '<div class="modal-content">' +
               '<div class="modal-header">' +
                  '<button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>' +
                  '<h4 class="modal-title">{{ title }}</h4>' +
               '</div>' +
            '<div class="modal-body" ng-transclude></div>' +
         '</div>' +
         '</div>' +
         '</div>',
      restrict: 'E',
      transclude: true,
      replace:true,
      scope:true,
      link: function postLink(scope, element, attrs) {
         scope.title = attrs.title;

         scope.$watch(attrs.visible, function(value){
            if(value == true)
               $(element).modal('show');
            else
               $(element).modal('hide');
         });

         $(element).on('shown.bs.modal', function(){
            scope.$apply(function(){
               scope.$parent[attrs.visible] = true;
            });
         });

         $(element).on('hidden.bs.modal', function(){
            scope.$apply(function(){
               scope.$parent[attrs.visible] = false;
            });
         });
      }
   };
});

我被困在这几个小时！有什么东西我错过了吗？任何见解都会有所帮助。感谢

Answer 1

我认为你应该使用对象而不是$scope.showModal的简单值。例如：

控制器：

$scope.showModal =  {visible: false};

$scope.toggleModal = function(){
    $scope.showModal.visible = !$scope.showModal.visible;
};

查看：

<input type="button" ng-click="toggleModal()" class="btn btn-default" value="Path">{{showModal}}
<modal title="Select a Testcase" show-modal="showModal">
    <form role="form" >
        <div class="form-group" style="padding: 5%">
            <div id="tree_div"></div>
        </div>
        <input type="button" value="Submit" class="btn btn-default">
    </form>
</modal>

指令：

angular.module('chariot').directive('modal', function () {
   return {
      template: '<div class="modal fade">' +
         '<div class="modal-dialog">' +
            '<div class="modal-content">' +
               '<div class="modal-header">' +
                  '<button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>' +
                  '<h4 class="modal-title">{{ title }}</h4>' +
               '</div>' +
            '<div class="modal-body" ng-transclude></div>' +
         '</div>' +
         '</div>' +
         '</div>',
      restrict: 'E',
      transclude: true,
      replace:true,
      scope:{ 
          title: '@',
          showModal: '=',
      },
      link: function postLink(scope, element, attrs) {
         if( typeof( scope.showModal.visible ) === "undefined" ) {
              scope.showModal.visible = false;
         }
         scope.$watch('showModal.visible', function(value){
            if(value == true)
               $(element).modal('show');
            else
               $(element).modal('hide');
         });

         $(element).on('shown.bs.modal', function(){
            scope.$apply(function(){
               scope.showModal.visible = true;
            });
         });

         $(element).on('hidden.bs.modal', function(){
            scope.$apply(function(){
               scope.showModal.visible = false;
            });
         });
      }
   };
});

将object绑定到指令时，可以从指令更改其属性，这些更改也将反映到控制器。

您的代码的其他问题是它的指令有replace: true - 所以当您在视图中声明<modal title="Select a Testcase" show-modal="showModal">时 - 此数据将被指令html替换，并使该属性不再可用。

为了解决这个问题，我制定了指令，通过更改映射来获取范围中的值，而不是属性：

  scope:{ 
      title: '@',  // Use the title attribute value as a string
      showModal: '=', // use the "show-modal" attribute as an object
  },

无法再次获得Popup的模态 - AngularJS

1 个答案: