angularjs – Angular UI Bootstrap Alert Closable Issue

<alert data-ng-repeat="alert in alerts" type="{{alert.type}}" close="closeAlert($index)">{{alert.msg}}</alert>

它按预期呈现：

我的问题是：是否有某种方法可以将某些通知关闭,而其他通知则根据变量？

我编写了这个模拟代码,并且只在closeable为true时才显示可关闭的x.

$scope.alerts = [
    { type: 'danger',closeable: false,msg: 'Oh snap! Change a few things up and try submitting again.' },{ type: 'success',closeable: true,msg: 'Well done! You successfully read this important alert message.' },{ type: 'warning',msg: 'Be careful! Something may go wrong here.' },{ type: 'info',msg: 'Attention! Here is some news for you.' }
];