如何启用或禁用一个基于单选按钮点击的td值angularjs？

<input type="radio" ng-model="enable" value="true">启用
<input type="radio" ng-model="enable" value="false">禁用

<td ng-class="{disabled: !enable}">这是一个可启用或禁用的td值</td>

app.controller('MyController', function($scope) {
  $scope.enable = true;

  $scope.updateEnableStatus = function(value) {
    $scope.enable = value;
  };
});

<div ng-controller="MyController">
  <input type="radio" ng-model="enable" value="true" ng-click="updateEnableStatus(true)">启用
  <input type="radio" ng-model="enable" value="false" ng-click="updateEnableStatus(false)">禁用

  <td ng-class="{disabled: !enable}">这是一个可启用或禁用的td值</td>
</div>