来自控制器的值不会在ng-model中更新

Question

我已经编写了自动完成代码，其中ng-change我从数据库中获取数据并以列表的形式显示自动完成内容。 点击列表中的数据后，我想使用ng-model在输入框中显示该数据，但我无法做到这一点。

以下是我的HTML代码：

<div class="input-group">
                <input type="text" class="form-control dropdown-toggle" data-toggle="dropdown" placeholder="add question list" ng-model="qList" aria-describedby="basic-addon2" ng-change="fnAutocompleteQList(qList)">
                <div class="dropdown-menu menu-width">
                    <ul ng-repeat="value in aAutocompleteQList">
                        <li ng-click="fnfnAutoQList(qList)">{{value.quesList.quesListName}}</li>
                    </ul>                        
                </div>
                <span class="input-group-addon btn-primary textColor" style="cursor:pointer" id="basic-addon2" ng-click="fnAddQuestionList(questionList)">add question list</span>
            </div>

以下是我的控制器代码

$scope.fnAutocompleteQList = function(qList) {
        var oGetQListPromise = searchBoxService.fnGetQuestionsList(qList);
        oGetQListPromise.then(function(response) {
            $scope.aAutocompleteQList = response;
        });
    };
    $scope.fnAutoQList = function(qListName) {
        $scope.qList = qListName;           
    };