Angular JS双向绑定不起作用

Question

I am not able to use two-way-binding in my controller. 我无法在控制器中使用双向绑定。 There is something strange but I don't understand it. 有一些奇怪的东西，但我不明白。 My data structure is a javascript object containing an array of strings. 我的数据结构是一个包含字符串数组的JavaScript对象。

$scope.schedule = {
    schedule_name: "Test 123",
    schedule_id: 1234,
    dates: [{
        date: "2015-01-01"
    }, {
        date: "2015-02-01"
    }, {...}]
}

I retrieve the schedules from my database and place it in a list in the UI. 我从数据库中检索计划，并将其放置在UI中的列表中。 The elements of the $scope.scheduleList are clickable. $scope.scheduleList的元素是可单击的。 If the user clicks on a schedule element then it will appear on the screen with all properties of the schedule object. 如果用户单击计划元素，则它将显示在屏幕上，其中包含计划对象的所有属性。

I iterate over the dates array with ng-repeat="date in schedule.dates" and use the date-value in ng-model="date.date" like this. 我使用ng-repeat="date in schedule.dates"的date遍历dates数组，并使用ng-model="date.date"的date-value这样。

My Problem is that the scope variable schedule won't be updated on any changes. 我的问题是范围变量schedule不会在任何更改上进行更新。 Here is an excerpt of my code: 这是我的代码的摘录：

 $scope.scheduleList = []; CommonDataService.get(URL).then(function(data) { for (var i = 0; i < data.length; i++) { data[i].dates.forEach(function(value, key) { data[i].dates[key] = {date: $filter("date")(value, "EEE, dd.MM.yyyy")}; }); data[i].schedule_name = data[i].schedule_name.substr(4); } $scope.scheduleList = data; }); $scope.schedule = {}; $scope.showSchedules = function(schedule) { $scope.schedule = schedule; } ... $scope.save = function() { console.log($scope.schedules); //CommonDataService.add(URL, $scope.schedules).then(function(response) { // console.log(response); //}); };

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.9/angular.min.js"></script> <body data-ng-app="rwk"> ... <div class="form-group col-lg-6" data-ng-repeat="date in schedule.dates track by $index" data-ng-if="key !== 'schedule_id' && key !== 'schedule_name'"> <div class="col-lg-9"> <p class="input-group pull-left"> <input data-rwk-datepicker data-format="D, dd.mm.yyyy" id="{{$index}}" type="text" class="form-control" data-ng-model="date.date" data-ng-required="true" /> </p> </div> </div> </body>

I am very lucky if anyone could help me! 如果有人可以帮助我，我很幸运！ Thanks in advance! 提前致谢！

Answer 1

You are likely calling the showSchedules() function from outside angular's scope. 您可能是从超出angular范围的范围调用showSchedules()函数。 You need to tell angular to update the bindings by wrapping the function body in $scope.$apply(...) : 您需要通过将函数主体包装在$scope.$apply(...)来告诉angular更新绑定$scope.$apply(...)

$scope.schedule = {};
$scope.showSchedules = function(schedule) {
    $scope.$apply(
        $scope.schedule = schedule;
    );
}

You could wrap the call to showSchedules in a $scope.$apply(...) call as well. 您也可以showSchedules的调用showSchedules在$scope.$apply(...)调用中。

Angular JS双向绑定不起作用

问题描述

1 个解决方案

解决方案1
0 已采纳 2015-04-28 16:27:27

Angular JS双向绑定不起作用

问题描述

1 个解决方案

解决方案1 0 已采纳 2015-04-28 16:27:27

解决方案1
0 已采纳 2015-04-28 16:27:27