我有一个AllCountries和SelectedCoutry对象。 我想列出<select>
上的所有国家,并通过SelectedCountry的值选择带有ng-model的选项。选择选项不绑定ng模型
但是,组合框的默认值被选中为空。
例子:
angular.module('ngPatternExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.OBJ = {
"OBJ": {
"AllCountries": [
{
"country": "USA",
"id": 1
},
{
"country": "Mexico",
"id": 2
},
{
"country": "Canada",
"id": 3
}
],
"SelectedCountry": {
"country_id": 1,
}
}
}
$scope.AM = $scope.OBJ.OBJ;
}]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="ngPatternExample">
<div ng-controller="ExampleController">
selected country: {{AM.SelectedCountry.country_id}} <br/>
<select class="form-control" ng-model="AM.SelectedCountry.country_id">
<option value=""> --- </option>
<option ng-repeat="co in AM.AllCountries" value="{{co.id}}"> {{co.country}} </option>
</select>
</div>
</body>
(http://plnkr.co/edit/PI3tOrIMSTMwGC0rYA5q?p=preview)
PS很好地解释了为什么这不工作八方通在角将是巨大的
发表在这里SO – Satpal