我有以下html:
<select id="vehicleMark" name="vehicleMark" ng-disabled="!checked2" ng-model="mark.vehicleMark">
<option value=""><c:out value=""/></option>
<c:forEach items="${markeVozila}" var="marka">
<option value="${marka}"><c:out value="${marka}"/></option>
</c:forEach>
</select>
<select id="vehicleModel" name="vehicleModel" data-ng-show="mark.vehicleMark != ''" ng-model="vehicleModel">
<option ng-repeat='model in carModels | filter: mark' value="{{model.modelId}}">
{{model.vehicleModel}}
</option>
</select>
现在,问题出在第二个选择中,我无法设置选项的值。如何将选项的值设置为模型对象的modelId属性值?