javascript-包含ng-template的指令中的角度转换(通用确认模态)

您好,我在基于angular-bootstrap Modal指令创建通用确认指令时遇到了麻烦.

我找不到在模态构造中使用的ng-template中包含内容的方法,因为ng-transclude指令未评估,因为它是执行$modal.open()之后加载的ng-template的一部分：

index.html(定向插入)：

<confirm-popup
    is-open="openConfirmation"
    on-confirm="onPopupConfirmed()"
    on-cancel="onPopupCanceled()"
>
Are you sure ? (modal #{{index}})

ConfirmPopup.html(指令模板)：

<script type="text/ng-template" id="confirmModalTemplate.html">
    <div>
        <div class="modal-header">
            <h3>Confirm ?</h3>
        </div>
        <div class="modal-body">
            {{directiveTranscludedContent}} // ng-transclude do not work here
        </div>
        <div class="modal-footer">
            <button class="btn btn-warning" ng-click="cancel()">Cancel</button>
            <button class="btn btn-primary" ng-click="ok()">Validate</button> 
        </div>
    </div>
</script>

ConfirmPopup.js(指令JS)：

.directive('confirmPopup', [
    function() {
        return {
            templateUrl: 'confirmPopup.html',
            restrict: 'EA',
            replace: true,
            transclude: true,
            scope: {
                isOpen: '=',
                confirm: "&onConfirm",
                cancel: "&onCancel"
            },
            controller: ['$scope', '$element', '$modal', '$transclude', '$compile', function($scope, $element, $modal, $transclude, $compile) {

              // watching isOpen attribute to dispay modal when needed
                $scope.$watch(
                    function() {
                        return $scope.isOpen;
                    },
                    function(newValue) {
                        if (newValue === true) {
                            openModal();
                        } else {
                            // if a modal is already dispayed : the modal must be canceled/confirmed by the user
                            // else (if no modal is dispayed), then do nothing
                        }
                    }
                );

                // open modal function
                // create / register ok/cancel callbacks
                // and open modal
                // all on one shot
                function openModal() {

                    $modal.open({
                        templateUrl: 'confirmModalTemplate.html',
                        controller: ['$scope', '$modalInstance', 'content', function($scope, $modalInstance, content) {

                            $scope.directiveTranscludedContent = content;

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

                            $scope.cancel = function() {
                                $modalInstance.dismiss();
                            };
                        }],
                        resolve: {
                            content: function() {
                                return $transclude().html();
                                      //return $compile($transclude().contents())($scope);
                            },
                        }
                    })
                    .result.then(
                        // modal has been validated
                        function() {
                            $scope.confirm();
                        },
                        // modal has been dismissed
                        function() {
                            if ($scope.cancel) {
                                $scope.cancel();
                            }
                        }
                    );
                };
            }]
        };
    }
]);

如果还不够清楚,请仅在单击“打开确认模式2”按钮时,在此PLUNKER上看到“您确定吗？(模式2)”.

解决方法:

ui-bootstrap模态仅支持template或templateUrl作为指定内容的方式.无论内容如何被检索,它都会通过$modal(或内部$modalStack)服务与提供的范围进行编译和链接.

因此,至少像那样,没有办法提供包含.

一种解决方法是嵌入一个占位符指令,该指令将附加被包含在DOM中的DOM,但是被包含在DOM中的DOM由于来自与模式不同的位置,因此需要以某种方式移交给该占位符.您已经将内容作为注入的resolve参数.我将在稍作修改的情况下使用它-我将传递实际的DOM,而不是经过解析的HTML.

因此,从高层次看：

.directive("confirmPopupTransclude", function($parse){
  return {
    link: function(scope, element, attrs){
      // could have been done with "=" and isolate scope, 
      // but avoids an unnecessary $watch
      var templateAttr = attrs.confirmPopupTransclude;
      var actualTemplateDOM = $parse(templateAttr)(scope);

      element.append(actualTemplateDOM);
    }
  };
})

并且,在openModal函数中(忽略不相关的属性)：

function openModal{
   $modal.open({
     controller: function($scope, content){
        $scope.template = content;
        // etc...
     },
     resolve: {
       content: function(){
         var transcludedContent;
         $transclude(function(clone){
           transcludedContent = clone; 
         });
         return transcludedContent; // actual linked DOM
       },
     // etc...
}

最后,在模态的实际模板中：

<div class="modal-body">
    <div confirm-popup-transclude="template"></div>
</div>

Your forked plunker

标签：angular-bootstrap,transclusion,angularjs,modal-dialog,javascript
来源： https://codeday.me/bug/20191120/2044878.html