相关疑难解决方法(0)

当我尝试使用promise从AngularUI-Bootstrap获取一个typeahead值时,我收到以下错误.

TypeError: Cannot read property 'length' of undefined
  at http://localhost:8000/static/js/ui-bootstrap-tpls-0.6.0.min.js:1:37982
  at i (http://localhost:8000/static/js/angular.min.js:79:437)
  at i (http://localhost:8000/static/js/angular.min.js:79:437)
  at http://localhost:8000/static/js/angular.min.js:80:485
  at Object.e.$eval (http://localhost:8000/static/js/angular.min.js:92:272)
  at Object.e.$digest (http://localhost:8000/static/js/angular.min.js:90:142)
  at Object.e.$apply (http://localhost:8000/static/js/angular.min.js:92:431)
  at HTMLInputElement.Va.i (http://localhost:8000/static/js/angular.min.js:120:156)
  at HTMLInputElement.x.event.dispatch (http://localhost:8000/static/js/jquery-1.10.2.min.js:5:14129)
  at HTMLInputElement.v.handle (http://localhost:8000/static/js/jquery-1.10.2.min.js:5:10866) 

我的HTML标记是:

<input type="text" class="form-control" id="guestName" ng-model="name" typeahead="name for name in getTypeaheadValues($viewValue)">

我的getTypeaheadValues功能执行以下操作:

$scope.getTypeaheadValues = function($viewValue)
{
    // return ['1','2','3','4'];

    $http({
        method: 'GET',
        url: 'api/v1/person?name__icontains=' + $viewValue
    }).error(function ($data) {
        console.log("failed to fetch typeahead data");
    }).success(function ($data) {
        var output = [];
        $data.objects.forEach(function …

我在我的应用程序中使用Angular-ui Bootstrap.我使用typeahead指令.

HTML:

<input type="text" class="pass_code_input" ng-model="SuppPrefix" Typeahead="ddl_item.Text for ddl_item in getData($viewValue)"/>

调节器

function AutoCompleteCtrl($scope,$http, AutoCompleteSrv) {
    $scope.getData = function (prefix) {
        AutoCompleteSrv.GetAutoComplete("Supplier", prefix).then(function (result) {
            var results_arr = [];
            angular.forEach(result.data, function (item) {
                results_arr.push({ "Val": item.Val, "Text": item.Text });
            });
            return results_arr
        });  
    };
};

服务:

    function AutoCompleteSrv($http) {
    var _$http = $http;
    self = this;
    self.GetAutoComplete = function (DataType, Prefix) {
        var promise = _$http({
            method: "GET",
            url: 'api/AutoComplete',
            params: { 'DataType': DataType, 'Prefix': Prefix }
        }).success(function …