Angular指令未更新模型视图

Question

我正在尝试在使用指令单击表单中的按钮后在模板中显示注释

HTML:

<h2>Comments</h2>
<ul class="comments_list">
    <li ng-repeat="com in comments" ng-cloak>{{com.name}} wrote<div class="message">{{com.text}}</div></li>
</ul>
<div class="add_comment" ng-show="posts.length > 0">
    <input type="text" class="form-control" ng-model="addComm.name" placeholder="Your name">
    <textarea class="form-control" ng-model="addComm.text" placeholder="Enter message"></textarea>
    <button class="btn btn-success" add-comment ng-model="addComm">Add</button>
</div>

和JS:

app.directive('addComment', function() {
    return {
        restrict: 'A',
        require: 'ngModel',
        priority: 1,
        link: function ($scope, element, attrs, ngModel) {
            element.on("click", function(event){
                event.preventDefault();
                console.log(ngModel.$modelValue);
                $scope.comments.push(angular.copy(ngModel.$modelValue));
            });
        }
    }
});

但在HTML中单击"添加"后,我的视图没有更新.如果我刷新页面(我正在使用ngStorage) - 新注释将出现在列表中,但不会在单击"添加"按钮后出现.

Answer 1

它正在发生,因为您正在更改javascript单击处理程序中的$ scope变量的值.试试这个:

app.directive('addComment', function() {
    return {
        restrict: 'A',
        require: 'ngModel',
        priority: 1,
        link: function ($scope, element, attrs, ngModel) {
            element.on("click", function(event){
                event.preventDefault();
                console.log(ngModel.$modelValue);
                $scope.$apply(function() {
                     $scope.comments.push(angular.copy(ngModel.$modelValue));
               });
            });
        }
    }
});