javascript - Angular typeahead 异步结果 - 在“运算符中接收错误 "TypeError: Cannot use '，以在...中搜索...”

Question

我已经为 Angular UI typeahead 字段制定了指令。我正在尝试设计它，以便当用户键入时，它会发送异步后端调用以获取结果，这些结果将填充出现的下拉列表，如 Angular-bootstrap docs, example 2 中所示。 。但是，当我开始输入(在本例中为“a”)时，我收到错误:

TypeError: Cannot use 'in' operator to search for 'getters' in a

这是进行 REST 调用的工厂方法:

certFactory.getUsersWithMatchingUsername = function(username) {



    return $http.get(urlBase + '/managed/user?_queryFilter=userName+co+' + '\'' + username + '\'', {timeout: timeoutLength})
        .then(function(response) {
            // success
            return response.data;
        },  function(response) {
            // error
            return $q.reject(response);
        });
};

这是调用工厂方法的 Controller 方法:

$scope.getters = {
        getUsersWithUsername: function (username) {
            certFactory.getUsersWithMatchingUsername(username)
                .then(function (response) {
                    var users = [];
                    angular.forEach(response.result, function(item) {
                        users.push(item);
                    })
                    return users;

                },  function (error) {
                    console.log('failed!')
                })
        }

这是我的指令:

angular.module('myApp')
    .directive('dropdownsearch',  function(){
        return {
            restrict: 'E',
            transclude: true,
            scope: {
                getterFn: '&',
                config: '=', // object with properties label and type
                disabled: '=?ngDisabled',
                required: '=?ngRequred',
                ngModel: '=',
                options: '='                
            },
            require: ['^form', 'ngModel'],
            templateUrl: 'views/templates/dropdownSearchView.html',
            replace: true,

            link: function(scope, iElm, iAttrs, controller) {

             if (iAttrs.required !== undefined) {
                // If attribute required exists
                // ng-required takes a boolean
                scope.required = true;
              }

              if (iAttrs.readonly !== undefined) {
                // If attribute required exists
                // ng-required takes a boolean
                scope.readonly = true;
              }

            }

        }


    }

);

这是指令模板:

<div class="form-group has-feedback">
    <label class="control-label"> Choose {{ config.type }}></label>
    <div class="dropdown dropdown">
        <div class="input-group">

            <input 
                   type="text"
                   class="form-control"
                   placeholder="Make selection" 
                   ng-model="ngModel" 
                   uib-typeahead="option as option[config.label] for option in getterFn($viewValue)"
                   typeahead-editable="false"
                   ng-required="required"
                   ng-disabled="disabled"
                   />
        </div>
    </div>
</div>

最后，这是我的使用指令:

<dropdownsearch ng-show= 'fieldMethods.showSubfield(subfield)'
 getter-fn="getters.getUsersWithUsername"
 ng-model="subsubfield.value"
 config="fieldMethods.getConfig(subfield)">
</dropdownsearch>

任何帮助将不胜感激。另外，如果需要任何其他信息，请告诉我。

Answer 1

UI Bootstrap 网站异步 Typeahead 示例使用 uib-typeahead="address for address in getLocation($viewValue)"。我的猜测是，您的错误消息表明它期望指令中的 for，而不是 as。我不明白这一点，所以我可能是错的! :-)