[英]ng-model is undefined from controller
嗨,
为什么来自foo()
函数的值是未定义的?
我发现问题是如果型号名称只是brand
,但这不是我的问题。 我的模型名称是car.brand
。
所以我的问题是 - 如何从ctrl访问模型?
HTML :
<div ng-controller="MyCtrl">
<div ng-if="cars" ng-repeat="car in cars">
<br>
<label>{{car.name}}</label>
<br>
<label>brand</label>
<select ng-model="car.brand" ng-options="car as car.name for car in brands" ng-change="loadBrands($index)">
<option value="">select</option>
</select>
<label>model</label>
<select ng-model="brand.model" ng-options="car as car.model for car in cars[$index].models">
<option value="">select</option>
</select>
</div>
<button ng-click="foo()">
save all
</button>
</div>
JS :
$scope.foo = function() {
alert("foo: " + $scope.car.brand);
}
谢谢。
当您使用ng-repeat
,您将拥有许多汽车,因此您可以在汽车中填充您的模型:
$scope.foo = function() {
for(var i in $scope.cars) {
alert("foo: " + $scope.cars[i].brand);
}
}
你需要使用car.brand as
或car.model as
<div ng-controller="MyCtrl">
<div ng-if="cars" ng-repeat="car in cars">
<br>
<label>{{car.name}}</label>
<br>
<label>brand</label>
<select ng-model="car.brand" ng-options="car.brand as car.name for car in brands" ng-change="loadBrands($index)">
<option value="">select</option>
</select>
<label>model</label>
<select ng-model="brand.model" ng-options="car.model as car.model for car in cars[$index].models">
<option value="">select</option>
</select>
</div>
<button ng-click="foo()">
save all
</button>
</div>
或者做
<div ng-controller="MyCtrl">
<div ng-if="cars" ng-repeat="car in cars">
<br>
<label>{{car.name}}</label>
<br>
<label>brand</label>
<select ng-model="car" ng-options="car as car.name for car in brands" ng-change="loadBrands($index)">
<option value="">select</option>
</select>
<label>model</label>
<select ng-model="brand" ng-options="car.brand as car.model for car in cars[$index].models">
<option value="">select</option>
</select>
</div>
<button ng-click="foo()">
save all
</button>
</div>
无论是之前的as
是价值ng-model
将得到
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