AngularJS中的条件验证

Question

只有在满足某些条件时,我才需要在表单字段上应用验证.说我有这样的表格:

<div ng-controller="MyController">
 <form name="myForm">
  <div>
   <div class="" ng-class="{error: myForm.gender.$invalid}">
    Gender:
   </div>
   Male   <input type="radio" name="gender" value="M" ng-model="survey.gender"   required/> 
   Female <input type="radio" name="gender" value="F" ng-model="survey.gender" required/> 
  </div>

  <div ng-show="survey.gender == 'F'">
   <div class="">
    Are you pregnant?
   </div>
   Yes <input type="radio" name="pregnant" value="Y" ng-model="survey.pregnant"/>
   No  <input type="radio" name="pregnant" value="N" ng-model="survey.pregnant"/>
  </div>
 </form>
</div>

我想只在用户选择女性时才提出怀疑问题.Angular会为此提供任何类型的验证吗？

Answer 1

好吧,实际上我刚刚找到了执行此操作的指令.我只需要添加ng-required="survey.gender == 'F'".

代码现在看起来像这样:

<div ng-controller="MyController">
 <form name="myForm">
  <div>
   <div class="" ng-class="{error: myForm.gender.$invalid}">
    Gender:
   </div>
   Male   <input type="radio" name="gender" value="M" ng-model="survey.gender" required/> 
   Female <input type="radio" name="gender" value="F" ng-model="survey.gender" required/> 
  </div>

  <div ng-show="survey.gender == 'F'">
   <div class="">
    Are you pregnant?
   </div>
   Yes <input type="radio" name="pregnant" value="Y" ng-model="survey.pregnant" ng-required="survey.gender == 'F'">
   No  <input type="radio" name="pregnant" value="N" ng-model="survey.pregnant" ng-required="survey.gender == 'F'">
  </div>
 </form>
</div>