我在使用Bootstrap-UI的带有动态数据的预先控制(从ajax调用获取的数据)时遇到问题。
我的服务中的响应看起来有点像[{id:1, text:'somebrand'},{id:2, text:'something'}]
HTML看起来像这样:
<input type="text" ng-model="result" min-length="2" typeahead="brand.id as brand.text for brand in brands($viewValue)" style="display:block">
在我的控制器中,我检索这样的内容:
$scope.brands = function(brandName){
$http.post('/brands/getbrandsviewmodel', { query : brandName}).then(function(response){
return limitToFilter(response.data, 15);
});
};
我遇到的问题是Bootstrap-UI中的错误,如下所示:
Cannot read property 'length' of undefined
at http://localhost:3000/assets/ui-bootstrap-tpls-0.4.0.js?body=1:2749:24
当我调试Bootstrap-UI代码时,我看到此处发生错误,并且匹配未定义:
//it might happen that several async queries were in progress if a user were typing fast
//but we are interested only in responses that correspond to the current view value
if (inputValue === modelCtrl.$viewValue) {
if (matches.length > 0) {....
我最初的反应是,Bootstrap-UI的typeahead不知道何时检索数据,但我不知道为什么,因为我使用的是promises?
答案 0 :(得分:13)
您需要实际从brands
函数返回承诺。试试这个:
$scope.brands = function(brandName){
return $http.post('/brands/getbrandsviewmodel', { query : brandName})
.then(function(response){
return limitToFilter(response.data, 15);
});
};