当在页面加载时设置模型值时，Angularjs typeahead-input-formatter不起作用

Question

我有一个具有typeahead和typeahead-input-formatter属性的文本框，用于在用户开始输入时提供用户提示列表，并在angularjs模型中存储所选值，但在文本框中显示所选值的文本，对于axample如果要设置的模型值“jsmith”文本框将显示“John Smith”，并且当用户从建议列表中选择建议值时它工作正常，但是当我检索现有记录并使用'ng-触发typeahead-input-formatter时init'它确实通过代码，但没有设置文本框的显示值：

HTML

<input ng-controller="TypeaheadCtrl" ng-init="travel.managerId" 
       ng-model="travel.managerId" type="text" 
       typeahead="suggestionEntry.userId as suggestionEntry.fullName for suggestionEntry in 
                  activedirectory($viewValue)" 
       typeahead-input-formatter="formatLabel($model)">

app.js

travelApp.controller('TypeaheadCtrl', function ($scope, $http, limitToFilter) {

    $scope.entries = [];
    $scope.activedirectory = function (empName) {
        return $http.get("api/activedirectory/GetActiveDirectoryEntries/" + empName).then(function (response) {
            $scope.entries = response.data;
            return limitToFilter(response.data, 20);
        });
    };

    $scope.formatLabel = function (model) {
        if ($scope.entries.length < 1 && model != undefined) {
            $http.get("api/activedirectory/GetActiveDirectoryEntries/" + model).success(function (data) {
                $scope.entries = data;

                for (var i = 0; i < $scope.entries.length; i++) {
                    if (model == $scope.entries[i].userId) {
                        return $scope.entries[i].fullName;
                    }
                }
            }).error(function () {
                alert('Error reading JSON file.');
            });
        }

        for (var i = 0; i < $scope.entries.length; i++) {
            if (model == $scope.entries[i].userId) {
                return $scope.entries[i].fullName;
            }
        }
    }
});

请告知。