ngForm

<form name="userForm" novalidate>

  <div class="form-group" ng-repeat="user in formData.users" ng-class="{ ‘has-error‘ : userFieldForm.email.$invalid }">
  <ng-form name="userFieldForm">
    <label>{{ user.name }}‘s Email</label>
    <input type="text" class="form-control" name="email" ng-model="user.email" required>
    <p class="help-block" ng-show="userFieldForm.email.$invalid">Valid Email Address Required</p>
  </ng-form>
  </div>

</form>