<span ng-repeat="x in user.role">
  <span ng-repeat= "name in x.permissions">
    <input type="checkbox" name={{name}} id="{{$index}}" ng-model="user.checkpermission.checked[$index]" ng-change="ChangedPermission(user)">
    <label for="{{name}}">{{name}} </label>
<br></span></span>
<div class="row">
    <span class="error-message" ng-if= "!user.checkpermission.checked">Please select a checkbox</span>
   </div>

</div>