ng-message 不适用于 select 个盒子

ng-message doesn't work for select boxes

我有一个 material 设计 select 我正在尝试使用 ng-message

验证它
<md-input-container class="md-block" flex-gt-sm >
   <label>Payment method</label>
   <md-select name="paymentMethod"  ng-model="payment.paymentMethod" flex ng-change="paymentMethodChange(payment.paymentMethod)">
      <md-optgroup label="Payment Method">
      <md-option ng-repeat="item in PayArr track by $index" value="{{item}}">{{item}}</md-option>
   </md-select>
   <div ng-messages="editForm.paymentMethod.$error" >
      <div ng-message="required">payment method required</div>
   </div>
</md-input-container>

我的表单名称是 editForm。我对输入框使用了相同的场景,并且效果很好。我不明白为什么它对 select 框不起作用。感谢大家的支持

您没有将 required 属性放入 md-select

<md-select name="paymentMethod" required  ng-model="payment.paymentMethod" flex ng-change="paymentMethodChange(payment.paymentMethod)">
      <md-optgroup label="Payment Method">
      <md-option ng-repeat="item in PayArr track by $index" value="{{item}}">{{item}}</md-option>
   </md-select>