javascript - 如何聚合多个字段的ngMessage

Question

我正在使用 Angular JS ngMessage 指令进行表单验证，我想聚合多个字段的 ngMessage 警报。基本上，我的表单包含 3 个输入(日、月、年)，我想在日期无效时显示警报(无论是无效的日、月或年)。我怎样才能做到这一点？我有plunkered我的问题，这是我如何使用 ngMessage 指令:

<form name="messageAnimationForm">
  <label for="day">Day</label>
  <input ng-model="day" id="day" name="day" ng-minlength="1" ng-maxlength="2" required class="ngMessageSample" ng-pattern="/^\d+$/"/> <br/><br/>
  <label for="month">Month</label>
  <input ng-model="month" id="month" name="month" ng-minlength="1" ng-maxlength="2" required class="ngMessageSample" ng-pattern="/^\d+$/"/><br/><br/>
  <label for="year">Year</label>
  <input ng-model="year" id="year" name="year" ng-minlength="4" ng-maxlength="4" required class="ngMessageSample" ng-pattern="/^\d+$/"/><br/><br/>

  <div>
    <div ng-messages="messageAnimationForm.day.$error" class="ngMessagesClass" ng-messages-multiple>
      <div ng-message="pattern" class="ngMessageClass">* This field is invalid, only numbers are allowed</div>
      <div ng-message="required" class="ngMessageClass">* Day is mandatory</div>
    </div>

    <div ng-messages="messageAnimationForm.month.$error" class="ngMessagesClass" ng-messages-multiple>
      <div ng-message="pattern" class="ngMessageClass">* This field is invalid, only numbers are allowed</div>
      <div ng-message="required" class="ngMessageClass">* Month is mandatory</div>
    </div>

    <div ng-messages="messageAnimationForm.year.$error" class="ngMessagesClass" ng-messages-multiple>
      <div ng-message="pattern" class="ngMessageClass">* This field is invalid, only numbers are allowed</div>
      <div ng-message="required" class="ngMessageClass">* Year is mandatory</div>
    </div>
  </div>
</form>

Answer 1

尝试将自定义验证器添加到三个字段之一，并从 Controller 手动触发它(或将监视添加到三个日期组件以触发验证函数):

<form name="messageAnimationForm">
<div ng-messages="messageAnimationForm.year.$error" class="ngMessagesClass" ng-messages-multiple>
  <div ng-message="invalidDate" class="ngMessageClass">Date not valid</div>
</div>
</form>

然后，在您的 Controller 中，您必须使用自定义规则检查日期的有效性。如果您希望显示该消息，则必须将自定义错误设置为 true(或设置为“false”以隐藏它):

$scope.messageAnimationForm.year.$error.invalidDate = checkIfYourDateIsValid();